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Free TOEFL® grammar drills, with the answer key
Drills
0 of 20 answered
1 · Subject–verb agreement
The number of applicants ___ increased sharply this year.
2 · Subject–verb agreement
Each of the students ___ required to submit a response.
3 · Articles
She is studying ___ history of the Roman Empire.
4 · Articles
He wants to become ___ engineer.
5 · Prepositions
The results are consistent ___ the earlier findings.
6 · Prepositions
Researchers attribute the decline ___ habitat loss.
7 · Verb tense
By the time the lecture ended, most students ___ their notes.
8 · Verb tense
She ___ in this laboratory since 2019.
9 · Parallel structure
The course covers writing essays, analysing data, and ___ presentations.
10 · Relative clauses
The professor ___ lecture we attended is retiring.
11 · Relative clauses
The building, ___ was constructed in 1890, is now a museum.
12 · Conditionals
If the experiment ___ repeated, the results would be more reliable.
13 · Conditionals
If I had known about the deadline, I ___ earlier.
14 · Comparatives
This method is far ___ than the one we used last term.
15 · Comparatives
The more she practised, ___ she became.
16 · Word form
The committee’s ___ was that the proposal be revised.
17 · Countable and uncountable
The department has very ___ information about the new policy.
18 · Countable and uncountable
There were ___ students in the seminar than last year.
19 · Gerunds and infinitives
The university decided ___ the deadline.
20 · Gerunds and infinitives
She avoided ___ the question directly.
How these are scored
Each item has exactly one correct option, checked against a stored answer key. No other option is accepted and there is no partial credit. The reason is shown whether you get it right or wrong.
These are Reach120-written practice items, not real TOEFL test items. They cover the grammar the 2026 writing rubrics reward — agreement, tense, articles, prepositions, parallel structure and word form.
The key ships to your browser with the page, so this drill is for practice rather than assessment — you could read the answers out of the page source if you wanted to. That is the honest trade for a drill that needs no account.
The full answer key
Published in full, so the page is useful whether or not you work through the drill above.
1 · Subject–verb agreement
The number of applicants ___ increased sharply this year.
“has” is the answer.
“The number of” is a singular subject, so it takes “has”. Contrast “a number of applicants have increased”, where the subject is the applicants themselves.
2 · Subject–verb agreement
Each of the students ___ required to submit a response.
“is” is the answer.
“Each” is singular no matter what follows it, so the verb is “is”. The plural noun in “of the students” does not control the verb.
3 · Articles
She is studying ___ history of the Roman Empire.
“the” is the answer.
A noun narrowed by an “of” phrase is specific, so it takes “the”. Uncountable “history” stands without an article only when it is general: “she is studying history”.
4 · Articles
He wants to become ___ engineer.
“an” is the answer.
“Engineer” begins with a vowel sound, so the indefinite article is “an”. The choice follows the sound, not the spelling.
5 · Prepositions
The results are consistent ___ the earlier findings.
“with” is the answer.
“Consistent” collocates with “with”. This is fixed usage rather than a rule you can derive, which is why it is worth learning as a pair.
6 · Prepositions
Researchers attribute the decline ___ habitat loss.
“to” is the answer.
“Attribute something to something” is the fixed pattern, so the answer is “to”. Compare “blame something on something”, which uses a different preposition for the same idea.
7 · Verb tense
By the time the lecture ended, most students ___ their notes.
“had finished” is the answer.
Two past events need the earlier one marked, so this takes “had finished”. “By the time” plus a past clause is a reliable trigger for the past perfect.
8 · Verb tense
She ___ in this laboratory since 2019.
“has worked” is the answer.
“Since” plus a start point describes something still true now, which is the present perfect: “has worked”. The simple past would say she no longer works there.
9 · Parallel structure
The course covers writing essays, analysing data, and ___ presentations.
“giving” is the answer.
Items in a list must share a form. The first two are “-ing” forms, so the third is “giving”. Breaking the pattern is one of the most visible errors in a timed response.
10 · Relative clauses
The professor ___ lecture we attended is retiring.
“whose” is the answer.
The lecture belongs to the professor, and the possessive relative pronoun is “whose”. “Who” and “whom” cannot show possession.
11 · Relative clauses
The building, ___ was constructed in 1890, is now a museum.
“which” is the answer.
After a comma the clause is non-defining, and non-defining clauses take “which”, never “that”. The commas are the signal.
12 · Conditionals
If the experiment ___ repeated, the results would be more reliable.
“were” is the answer.
“Would” in the main clause marks this as hypothetical, which pairs with “were” in the if-clause. This subjunctive form is used for every subject.
13 · Conditionals
If I had known about the deadline, I ___ earlier.
“would have applied” is the answer.
A past unreal condition pairs “had known” with “would have applied”. The deadline has passed, so both halves sit in the past.
14 · Comparatives
This method is far ___ than the one we used last term.
“more efficient” is the answer.
“Than” demands a comparative, and a three-syllable adjective forms it with “more efficient”. An adverb would be wrong because the word describes the method, not an action.
15 · Comparatives
The more she practised, ___ she became.
“the more confident” is the answer.
The double comparative pattern is “the more …, the more …”, so the second half needs “the more confident”. Dropping the second “the” breaks the structure.
16 · Word form
The committee’s ___ was that the proposal be revised.
“recommendation” is the answer.
The gap is the subject of “was”, so it needs a noun: “recommendation”. Reaching for the verb here is the most common word-form slip in timed writing.
17 · Countable and uncountable
The department has very ___ information about the new policy.
“little” is the answer.
“Information” is uncountable, and the uncountable quantifier is “little”. “Few” and “many” only go with things you can count.
18 · Countable and uncountable
There were ___ students in the seminar than last year.
“fewer” is the answer.
“Students” are countable, so the comparative is “fewer”. “Less” belongs with uncountable nouns such as time or information.
19 · Gerunds and infinitives
The university decided ___ the deadline.
“to extend” is the answer.
“Decide” is followed by an infinitive, so the answer is “to extend”. Which form a verb takes is a property of that verb and has to be learned verb by verb.
20 · Gerunds and infinitives
She avoided ___ the question directly.
“answering” is the answer.
“Avoid” takes a gerund, so the answer is “answering”. It sits in the same group as “enjoy”, “suggest” and “consider”.
Common questions
- Is grammar scored separately on the 2026 TOEFL?
- No. There is no grammar section. Grammar reaches your score through the writing and speaking rubrics, where control of language is one of the dimensions raters judge, and through Build a Sentence, where arranging the given words correctly is the whole task.
- How are these drills scored?
- Each item has exactly one correct option, checked against a stored answer key. No other option is accepted and there is no partial credit. The reason is shown whether you get it right or wrong.
- Are these real TOEFL questions?
- These are Reach120-written practice items, not real TOEFL test items. They cover the grammar the 2026 writing rubrics reward — agreement, tense, articles, prepositions, parallel structure and word form.
- What grammar do the drills cover?
- 20 items across 11 points: subject–verb agreement, articles, prepositions, verb tense, parallel structure, relative clauses, conditionals, comparatives, word form, countable and uncountable, gerunds and infinitives.
- Do I need an account?
- No. The drill runs in your browser, needs no account, stores nothing, and does not use any AI credit. The full answer key is published on this page as well, so you can read it without answering anything.
The next step
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