Noun Clauses in Subject Position in Technical English
5 exercises — practise clausal subjects and their extraposed "it" paraphrases.
0 / 22 completed
1 / 22
Which sentence correctly uses a "that"-clause directly as the grammatical subject of the sentence?
"That the tests failed surprised no one on the team" is correct: a full "that"-clause can function directly as the subject of a sentence, taking a singular verb ("surprised") even though it contains its own internal clause. Option B incorrectly inserts the redundant pronoun "it" after the subject clause, duplicating the subject role that the "that"-clause already fills. Option C wrongly uses the present tense "fail" inside the clause, which doesn't match the past-tense context established by "surprised". Option D inserts an ungrammatical extra article "the" before "that", which doesn't belong in this structure.
2 / 22
Which sentence correctly rephrases a subject "that"-clause using the more natural extraposed "it" construction?
"It surprised no one that the tests failed" is correct: this extraposed construction moves the heavy "that"-clause to the end of the sentence and fills the original subject position with the dummy pronoun "it", which is the more natural, commonly preferred pattern in English, especially in speech and informal writing. Option B keeps the clause in subject position but redundantly and ungrammatically adds "it" right after it, creating two subjects. Option C scrambles the word order into an ungrammatical sequence. Option D incorrectly uses "there" instead of "it" as the dummy subject, which is not valid for this extraposition pattern.
3 / 22
Which sentence correctly uses a "whether"-clause as the subject of the sentence, with the correct singular verb agreement?
"Whether the migration succeeds depends on the rollback plan" is correct: the entire "whether"-clause functions as a single, singular subject, so it takes the singular verb "depends", and the embedded clause itself keeps normal statement word order with correct subject-verb agreement ("the migration succeeds"). Option A incorrectly uses the plural verb form "depend" instead of "depends" for the singular clausal subject. Option C wrongly inverts the embedded clause into question word order ("does the migration succeed"), which is not permitted inside a subject noun clause. Option D drops the third-person -s from "succeed", breaking agreement within the embedded clause.
4 / 22
Which sentence correctly uses a "what"-clause as the subject of the sentence in a technical context?
"What caused the outage remains under investigation" is correct: the "what"-clause functions as the singular subject of the sentence and takes the singular verb "remains", while the embedded clause itself keeps normal statement word order. Option B incorrectly uses the plural verb "remain" instead of "remains" for this singular clausal subject. Option C wrongly inserts the auxiliary "did" inside the embedded clause, which is not needed or grammatical in this noun-clause structure. Option D incorrectly uses the -ing form "causing" instead of the finite past tense verb "caused" required inside the embedded clause.
5 / 22
Which sentence correctly uses BOTH a fronted subject noun clause and its extraposed "it" paraphrase with matching, consistent meaning?
"That the API is deprecated matters little now" / "It matters little now that the API is deprecated" is correct: both versions correctly use the singular verb "matters" agreeing with the singular clausal subject (in the first) or the dummy subject "it" (in the second), and both keep the embedded clause "that the API is deprecated" grammatically complete with "is". Option B incorrectly uses the plural "matter" in the second sentence. Option C drops "is" from the first sentence's embedded clause ("the API deprecated"), making it ungrammatical. Option D uses the plural "matter" in the first sentence instead of "matters".
6 / 22
Sarah mentioned in the code review comment: "The application should handle invalid input gracefully." Which sentence best reflects this statement using a noun clause as the subject?
This question tests using a 'that'-clause as the subject. Option 2 correctly places the noun clause ('The application should handle…') at the beginning of the sentence, directly following the subject. Options 1 and 3 incorrectly use 'it' or rephrase with unnecessary introductory phrases. Option 4 presents the same idea but lacks the specific attribution to Sarah.
7 / 22
Emily reported in the status update: "What needs to be done to resolve this critical bug?" Which sentence correctly utilizes a 'what' clause as the subject of this question?
This tests the use of a 'what' clause as the subject. Option 2 correctly frames the question with 'What…', acknowledging the source through attribution to Emily. Options 1 and 3 misinterpret the meaning and structure of the question. Option 4 is simply a restatement of the original statement without using the noun clause effectively.
8 / 22
During the standup meeting, Ben said: "The API should handle requests that contain invalid data." Which of the following sentences best combines a fronted subject noun clause with its extraposed 'it' paraphrase for consistent meaning?
This question tests both fronted subject and extraposed 'it' clauses. Option 2 represents the most natural and concise way to convey the information while maintaining consistent meaning – it directly attributes the statement to Ben and uses the extraposed 'it' construction for clarity. Options 1 and 3 are unnecessarily wordy, and option 4 is a less direct phrasing.
9 / 22
Sarah mentioned in the code review comment: "The application should handle invalid input gracefully." Which sentence best reflects this statement using a noun clause as the subject?
This question tests using a 'that'-clause as the subject. Option 2 correctly places the noun clause ('The application should handle…') at the beginning of the sentence, directly following the subject. Options 1 and 3 incorrectly use 'it' or rephrase with unnecessary introductory phrases. Option 4 presents the same idea but lacks the specific attribution to Sarah.
10 / 22
Emily reported in the status update: "What needs to be done to resolve this critical bug?" Which sentence correctly utilizes a 'what' clause as the subject of this question?
This tests the use of a 'what' clause as the subject. Option 2 correctly frames the question with 'What…', acknowledging the source through attribution to Emily. Options 1 and 3 misinterpret the meaning and structure of the question. Option 4 is simply a restatement of the original statement without using the noun clause effectively.
11 / 22
During the standup meeting, Ben said: "The API should handle requests that contain invalid data." Which of the following sentences best combines a fronted subject noun clause with its extraposed 'it' paraphrase for consistent meaning?
This question tests both fronted subject and extraposed 'it' clauses. Option 2 represents the most natural and concise way to convey the information while maintaining consistent meaning – it directly attributes the statement to Ben and uses the extraposed 'it' construction for clarity. Options 1 and 3 are unnecessarily wordy, and option 4 is a less direct phrasing.
12 / 22
Sarah mentioned in the code review comment: "The application should handle invalid input gracefully." Which sentence best reflects this statement using a noun clause as the subject?
This question tests using a 'that'-clause as the subject. Option 2 correctly places the noun clause ('The application should handle…') at the beginning of the sentence, directly following the subject. Options 1 and 3 incorrectly use 'it' or rephrase with unnecessary introductory phrases. Option 4 presents the same idea but lacks the specific attribution to Sarah.
13 / 22
Emily reported in the status update: "What needs to be done to resolve this critical bug?" Which sentence correctly utilizes a 'what' clause as the subject of this question?
This tests the use of a 'what' clause as the subject. Option 2 correctly frames the question with 'What…', acknowledging the source through attribution to Emily. Options 1 and 3 misinterpret the meaning and structure of the question. Option 4 is simply a restatement of the original statement without using the noun clause effectively.
14 / 22
During the standup meeting, Ben said: "The API should handle requests that contain invalid data." Which of the following sentences best combines a fronted subject noun clause with its extraposed 'it' paraphrase for consistent meaning?
This question tests both fronted subject and extraposed 'it' clauses. Option 2 represents the most natural and concise way to convey the information while maintaining consistent meaning – it directly attributes the statement to Ben and uses the extraposed 'it' construction for clarity. Options 1 and 3 are unnecessarily wordy, and option 4 is a less direct phrasing.
15 / 22
In a Slack message to the team, Alex wrote: 'The database should be optimized for read performance.' Which of the following options best demonstrates the correct use of a noun clause as the subject in this context?
This question focuses on natural phrasing. Option 1 correctly employs the 'it' construction to front the noun clause—a common and accepted pattern in technical communication. The other options either use awkward verb placement or incorrectly frame Alex as the subject of the statement.
16 / 22
During a standup meeting, Maria said: 'The authentication process should validate user credentials.' Which sentence best reflects this statement using a noun clause as the subject?
This question tests the correct use of 'it' to front a noun clause. Option 1 utilizes this construction effectively, creating a clear and concise sentence. The other options are either grammatically incorrect or employ an unnatural phrasing, failing to accurately represent Maria's statement.
17 / 22
In a code review comment, John wrote: 'The API endpoint should return a JSON response.' Which of the following sentences best uses a noun clause as the subject?
This question assesses understanding of the standard 'it' construction. Option 1 correctly uses 'it' to front the noun clause, providing a clear and professional way to express the requirement for the API endpoint. The other options present awkward or incorrect grammatical structures.
18 / 22
The team lead, Sarah, communicated: 'The system needs more robust error handling.' Which sentence correctly utilizes a noun clause as the subject of this message?
This question focuses on a straightforward application of the 'it' construction. Option 1 correctly uses 'it' to front the noun clause as the subject, demonstrating correct grammar and clarity. The other options present grammatically flawed or awkwardly phrased alternatives.
19 / 22
A junior developer is writing a comment for a failing unit test. They type: 'The function should return null if the input is invalid.' Which of the following best reflects this statement using a noun clause as the subject?
This question tests understanding of fronting a noun clause. Option 1 correctly uses 'The function' as the subject and phrases the condition as something the function *should* do. Options 2 & 4 are less natural word order. Option 3 incorrectly places 'null' at the beginning.
20 / 22
A code reviewer is providing feedback on a pull request. They write: 'The API endpoint should handle requests with expired tokens.' Which of the following options best demonstrates the correct use of a noun clause as the subject in this context?
This question focuses on expressing a requirement. Option 3 correctly presents the *API endpoint* (subject) as performing the action: handling… The other options shift the focus away from the endpoint.
21 / 22
In a PR description for a new feature, a developer writes: 'The system needs to support multiple concurrent users.' Which sentence correctly utilizes a noun clause as the subject of this statement?
This question tests the ability to express a functional requirement. Option 2 correctly frames the need as something *the system* (subject) *needs to do*. Option 1 is grammatically awkward. Options 3 & 4 misinterpret the meaning.
22 / 22
During a Slack discussion about performance bottlenecks, David typed: 'The service needs to reduce its memory footprint.' Which sentence best demonstrates the correct use of a noun clause as the subject in this context?
This question tests understanding of fronting. The core noun clause ('The service needs to reduce its memory footprint') functions as the subject. Option 1 accurately reflects this structure by using 'it' to paraphrase the clause, while the other options misplace or unnecessarily complicate the sentence.
What will I practise in "Noun Clauses in Subject Position — IT Grammar Exercise"?
Practise using that- and whether-clauses as sentence subjects, verb agreement with clausal subjects, and the extraposed "it" alternative in technical writing.
How many exercises are in this module?
This module has 22 multiple-choice exercises, each with instant feedback and a full explanation of the correct answer.
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How is this different from reading an article on the same topic?
Articles explain grammar rules in prose; this exercise tests and reinforces those rules through active recall with immediate feedback — the two work best together.
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Every exercise is written by the CoderSlingo team, drawing on real workplace English used in IT roles, then reviewed for accuracy and clarity.