Question

passage 1
identifying sentences with correct use of verbs
read each sentence. three of the sentences have at least one error in the use of verbs, but one of the sentences is correct. identify the correct sentence in each set.

• if he would have composed a new song, she would have performed it for the talent show.
• if the rain would have begun before midnight, i would have noticed it.
• would you have taken geometry if you would have known you could have taken trigonometry instead?
• if lin had completed her biology degree, she could be fulfilling her plan to research mushroom spores.

Explanation:

The correct sentence uses the third conditional structure ("had completed") for the past unreal condition and the modal + continuous verb ("could be fulfilling") for the present unreal result, which is grammatically valid. The other sentences incorrectly use "would have" in the if-clause instead of "had" for past unreal conditions.

Answer:

If Lin had completed her biology degree, she could be fulfilling her plan to research mushroom spores.