- Choice A always repeats the underlined part of the sentence. If there is no error, choose A.
- If you cannot spot an error, the answer-choices often can direct you where to look.
- About 1 in 5 improving sentences questions are correct as written.
A bite from the tsetse fly invariably paralyzes its victims unless an antidote is administered within two hours.
- its victims unless an antidote is administered
- its victims unless an antidote can be administered
- its victims unless an antidote was administered
- its victims unless an antidote is administered to the victims
- its victims unless they receive an antidote
Choice (A) is incorrect since it is unclear whether the victim or the fly should receive the antidote.
Choice (B) is incorrect since is is more direct than can be.
Choice (C) is incorrect. A statement of fact should be expressed in the present tense, not the past tense.
Choice (D) is wordy. A pronoun should be used for the phrase the victims.
Choice (E) is the answer since they correctly identifies who should receive the antidote.