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English · Grammar & Usage

Hard Grammar & Usage Drill

15 hard-difficulty ACT English questions on Grammar & Usage. Each question is on its own page with a worked answer explanation, the underlying rule, and a quick study tip.

Hard English Grammar & Usage

All 15 questions

  1. 1 Subject-Verb Agreement: Collective Subject The team of researchers are presenting their findings at the conference next week. Hard
  2. 2 Pronoun Case After a Preposition The director gave the script to my brother and I before the rehearsal began. Hard
  3. 3 Verb-Tense Consistency Across Clauses When she arrived at the lab, she realizes that the experiment had already been conc Hard
  4. 4 Misplaced Modifier Walking down the street, the storefront window caught my attention with its bright Hard
  5. 5 Pronoun Antecedent Agreement Each of the candidates submitted their application before the deadline last Friday. Hard
  6. 6 Subject-Verb Agreement: Collective Subject The team of researchers are presenting their findings at the conference next week. Hard
  7. 7 Pronoun Case After a Preposition The director gave the script to my brother and I before the rehearsal began. Hard
  8. 8 Verb-Tense Consistency Across Clauses When she arrived at the lab, she realizes that the experiment had already been conc Hard
  9. 9 Misplaced Modifier Walking down the street, the storefront window caught my attention with its bright Hard
  10. 10 Pronoun Antecedent Agreement Each of the candidates submitted their application before the deadline last Friday. Hard
  11. 11 Subject-Verb Agreement: Collective Subject The team of researchers are presenting their findings at the conference next week. Hard
  12. 12 Pronoun Case After a Preposition The director gave the script to my brother and I before the rehearsal began. Hard
  13. 13 Verb-Tense Consistency Across Clauses When she arrived at the lab, she realizes that the experiment had already been conc Hard
  14. 14 Misplaced Modifier Walking down the street, the storefront window caught my attention with its bright Hard
  15. 15 Pronoun Antecedent Agreement Each of the candidates submitted their application before the deadline last Friday. Hard

How to use this drill

Open the questions one at a time. Read the prompt, decide on an answer before scrolling, then check the explanation. The point of a drill is not to "get the question right" — it's to internalize the rule so you can apply it cold under timed conditions on test day.

If you're missing more than a third of the questions in this set, drop down a difficulty tier and rebuild from there. If you're getting all of them quickly, jump up a tier and try a mixed drill across subtopics.

What "Hard" means here

Hard questions are designed to separate strong test-takers. They typically require multiple rules applied in sequence, or careful elimination among answers that all look plausible. Expect to see these appear later in real ACT sections; even strong test-takers miss a couple per test.

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