The example sentence is written in what is called passive voice. Passive voice is an inversion of normal grammar whereby the object of the sentence is transformed into its subject. Instances of passive voice should often (for concision and clarity's sake) be rewritten in active voice. The best way to do so with the sentence above is "Caroline cheated on her homework."

The example sentence is written in what is called passive voice. Passive voice is an inversion of normal grammar whereby the object of the sentence is transformed into its subject. Instances of passive voice should often be changed so that they are written in active voice. Sentences written in active voice are, in general, clearer and more precise than those written in passive voice. The best way to do so with the sentence above is "The injured man went to the hospital."

The sentence above, as written, is in passive voice. Passive voice inverts the object and subject of a sentence, and should usually be changed to active voice. Passive voice often makes sentences overly wordy and confusing. The best way to change the sentence above into active voice is, "Fearsome warriors roamed the wild and untamed plains."

The sentence above, as written, is in passive voice. Passive voice inverts the object and subject of a sentence, and is often more confusing and less concise than the active voice. In this case, the unnecessary use of the passive voice creates a dangling modifier, "as his" (meaning the dog's) "owner" is used in the first clause, the subject of the second clause must be "the dog." The best way to change the sentence above into active voice is, "As his owner howled with frustration, the naughty dog ate the spaghetti."

The sentence above, as written, is in passive voice. Passive voice inverts the object and subject of a sentence, and is often overly confusing and wordy. The best way to change the sentence above into active voice is, "The brilliant mechanic repaired the car."

The sentence above, as written, is in passive voice. Passive voice inverts the object and subject of a sentence, and is often less concise, and more confusing, than sentences framed in a direct, active voice. The best way to change the sentence above into active voice is, "Big Chuck, the incredibly fast horse, won the important race." Note that the correct version of the sentence includes an interrupting phrase, which must be contained within commas.

The initial independent clause in the sentence, "Mike and Jonas were asked to spar by the boxing coach," uses passive voice ("were asked"); it becomes clearer when we use active voice ("the boxing coach asked Mike and Jonas . . .").

Since the sentence is in past tense (indicated by "knew"), "had" is correct. The correct past participle of the verb "drive" is "driven." "Had driven" is the correct pairing and therefore the best improvement in this sentence.

The sentence describes what humans did to horses in the past, a fact that needs to be reflected in the verb's tense and transitivity. The correct answer must indicate that the domesticating being discussed took place in the past and was done by humans to horses, leading to "were domesticated" as the only possible answer choice.

Avoid the passive voice of the original ("it still needed alterations") and choose the simplest answer which preserves the meaning of the original sentence.