5 exercises — mixing short, medium, and complex sentences: combining choppy sentences and breaking up run-ons in technical documentation.
0 / 19 completed
1 / 19
A developer writes: "The service starts. The service loads config. The service connects to the database. The service listens for requests." Which rewrite best improves sentence variety?
Option D is correct — all three rewrites improve the choppy original by varying sentence structure. Option A uses a compound predicate (four verbs sharing one subject). Option B uses a subordinate temporal clause ("When…"). Option C opens with a participial phrase ("Starting up…") and uses more varied vocabulary (establishes, begins listening). In practice, combine all three techniques across a paragraph rather than repeating one pattern. The original uses four identical short sentences, which creates a list-like drone. Technical writing benefits from sentence variety: mix short declarative sentences (for emphasis) with complex sentences (for relationships) and compound predicates (for parallel actions).
2 / 19
A postmortem reads: "The monitoring system detected the anomaly. However, the alert did not fire. This was because the threshold was misconfigured. The on-call engineer was not paged." Which rewrite is best?
Option B is the strongest. It uses a concessive clause ("Although…") to link cause and effect, an em dash to insert the root cause efficiently, and a participial phrase ("leaving…") to show consequence — three different structures in one sentence. It reads as a single coherent event sequence, not four separate observations. Option A runs all four clauses together with semicolons and conjunctions, creating a run-on. Option C improves the original slightly but uses "But" and "So" — too casual for a postmortem. Option D is formal and correct but uses a passive construction ("was detected") that buries the monitoring system at the end. For postmortems: use varied structures that show the causal chain clearly.
3 / 19
An architecture document contains this passage: "We use Redis for caching. We use PostgreSQL for persistence. We use Kafka for events. We use Elasticsearch for search." Which rewrite demonstrates the best sentence variety for a technical document?
Option B is the best for a technical document. It opens with a meta-sentence ("The stack comprises four data stores") that signals the structure to the reader, then uses a colon-introduced list that avoids repeating the verb pattern. This is a common and effective technique in technical documentation: introduce the category → list the members with their roles. Option A is a compound sentence with a comma-separated list — acceptable but more suitable for prose. Option C turns each sentence passive — creates repetition of "is Xed by" which is awkward. Option D pairs the sentences but still repeats "is used for" four times. When listing parallel items in technical docs, prefer a list structure or colon introduction over repetitive parallel clauses.
4 / 19
Which version of this technical explanation best uses a short sentence for emphasis combined with longer explanatory sentences?
Option C is the best. It uses a medium-length compound sentence to describe the pipeline stages, a second sentence to explain the deploy strategy, and then two short sentences ("Zero downtime. That is the goal.") for emphasis. Short sentences after longer ones create a natural full stop — they signal: this is what matters. Option A packs everything into one unwieldy sentence with a relative clause hanging at the end. Option B does the same and never reaches a natural pause. Option D is a numbered series — useful for step-by-step instructions but feels mechanical in a technical explanation passage. Use short sentences deliberately: one short sentence after two longer ones draws the eye.
5 / 19
A README section reads: "You need to set the environment variables. You need to install the dependencies. You need to run the migration. You need to start the server." Which rewrite best uses varied sentence structure for a setup guide?
Option B is the best for a README setup guide. It groups prerequisites into a subordinate clause ("Before starting…"), combines them ("set… and installed…"), uses a temporal connector for the sequential step ("Once the migration has been executed"), and includes the exact command (`npm start`). This reads as a human explanation, not a robot list. Option A is a single long sentence — grammatically correct but reads like a mental checklist without guidance. Option C improves conciseness but loses context about order and prerequisites. Option D uses a nominal chain ("the migration should be run… the server can be started") — overly formal and harder to scan. Setup guides benefit from: one sentence for prerequisites, a second sentence for the action step, and code inline.
6 / 19
A developer is reviewing a pull request for a new API endpoint. The code includes the following comment: 'This function handles user authentication. It validates the input data and returns an access token if successful. Otherwise, it throws an error.' Which rewrite best improves sentence variety in this review comment?
Option 2 uses a slightly more complex sentence structure to provide greater detail about the function's behavior. Options A and C are too terse, while option D is overly simplistic and lacks clarity regarding error handling. The goal is to explain concisely without sacrificing accuracy.
7 / 19
A PR description for a database migration states: 'The migration updates the user table. The migration adds a new column. It also optimizes existing indexes.' Which rewrite demonstrates the best sentence variety?
Option 1 effectively combines related actions into a single sentence while maintaining clarity. Option 2 is too conversational. Option 3 uses overly formal phrasing, and option 4 is far too brief.
8 / 19
A standup update from a developer reads: 'I fixed a bug. It was in the login process. I also worked on documentation.' Which rewrite best uses varied sentence structure for a concise standup?
Option 0 provides a clear and concise summary of the developer's activities, using varied sentence structure to improve readability. Options A and B are too verbose, option C is overly detailed, and option D is entirely insufficient.
9 / 19
A developer is reviewing a pull request for a new API endpoint. The code includes the following comment: 'This function handles user authentication. It validates the input data and returns an access token if successful. Otherwise, it throws an error.' Which rewrite best improves sentence variety in this review comment?
Option 2 uses a slightly more complex sentence structure to provide greater detail about the function's behavior. Options A and C are too terse, while option D is overly simplistic and lacks clarity regarding error handling. The goal is to explain concisely without sacrificing accuracy.
10 / 19
A PR description for a database migration states: 'The migration updates the user table. The migration adds a new column. It also optimizes existing indexes.' Which rewrite demonstrates the best sentence variety?
Option 1 effectively combines related actions into a single sentence while maintaining clarity. Option 2 is too conversational. Option 3 uses overly formal phrasing, and option 4 is far too brief.
11 / 19
A standup update from a developer reads: 'I fixed a bug. It was in the login process. I also worked on documentation.' Which rewrite best uses varied sentence structure for a concise standup?
Option 0 provides a clear and concise summary of the developer's activities, using varied sentence structure to improve readability. Options A and B are too verbose, option C is overly detailed, and option D is entirely insufficient.
12 / 19
A developer is reviewing a pull request for a new API endpoint. The code includes the following comment: 'This function handles user authentication. It validates the input data and returns an access token if successful. Otherwise, it throws an error.' Which rewrite best improves sentence variety in this review comment?
Option 2 uses a slightly more complex sentence structure to provide greater detail about the function's behavior. Options A and C are too terse, while option D is overly simplistic and lacks clarity regarding error handling. The goal is to explain concisely without sacrificing accuracy.
13 / 19
A PR description for a database migration states: 'The migration updates the user table. The migration adds a new column. It also optimizes existing indexes.' Which rewrite demonstrates the best sentence variety?
Option 1 effectively combines related actions into a single sentence while maintaining clarity. Option 2 is too conversational. Option 3 uses overly formal phrasing, and option 4 is far too brief.
14 / 19
A standup update from a developer reads: 'I fixed a bug. It was in the login process. I also worked on documentation.' Which rewrite best uses varied sentence structure for a concise standup?
Option 0 provides a clear and concise summary of the developer's activities, using varied sentence structure to improve readability. Options A and B are too verbose, option C is overly detailed, and option D is entirely insufficient.
15 / 19
During a Slack discussion about a failing microservice, Sarah writes: 'The service is down. The API returns 500 errors. We need to investigate.' Which rewrite best demonstrates sentence variety and clarity in this context?
Consider the flow of information and the desired level of detail.
Option 3 combines a concise statement of the problem with an immediate call to action, creating a more dynamic flow. Options 1 and 2 are overly terse and lack context. Option 4 is too conversational for a technical update. The key is to present the core issue clearly alongside the next step.
16 / 19
A developer submits a PR description for a new feature: 'This code adds a new endpoint. It uses GraphQL. The endpoint returns data.' Which rewrite best improves the sentence variety and overall readability of this description?
Think about how to group related information effectively.
Option 1 provides a clear, concise summary of the changes in a single sentence that flows logically. Options 2 and 3 are overly verbose and add unnecessary repetition. Option 4 lacks context and doesn't clearly state *what* the code does.
17 / 19
You're reviewing a code review comment: 'The function takes an ID. It retrieves data from the database. Then it returns the result.' Which rewrite best utilizes varied sentence structure for a more professional and informative comment?
Focus on conveying the function's purpose and steps clearly
Option 1 is the most structured and professional. It breaks down the function's actions into a clear sequence without sounding overly simplistic or conversational like options 2 and 4. Option 3, while accurate, is too verbose for a typical code review comment.
18 / 19
A developer writes in their standup update: 'I updated the database schema. I also added new tests.' Which rewrite best uses varied sentence structure to deliver this information concisely and effectively?
Consider the audience – a quick overview is often needed
Option 2 is succinct and direct, suitable for a standup. It uses short sentences to emphasize key changes. Options 1 is acceptable but slightly less impactful. Option 3 is overly formal and lengthy, while option 4 is too informal.
19 / 19
A technical document describes a new API endpoint: 'The endpoint accepts a JSON payload. The payload contains user credentials. Upon receiving the payload, the system authenticates the user.' Which rewrite best employs sentence variety to create a more engaging and understandable description?
Think about how to explain complex processes step-by-step
Option 3 provides a detailed explanation of the API endpoint's functionality in a clear and logical sequence. It breaks down the process into distinct steps, making it easier for the reader to understand. Options 1 is good but slightly less descriptive, option 2 is too informal and option 4 lacks detail.
What will I practise in "Sentence Variety in Technical Writing — Grammar Exercise"?
Practice mixing short, medium, and complex sentences in technical writing: combine choppy sentences and break up run-ons in documentation and postmortems.
How many exercises are in this module?
This module has 19 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.
Who writes these exercises?
Every exercise is written by the CoderSlingo team, drawing on real workplace English used in IT roles, then reviewed for accuracy and clarity.