Choose the sentence that is closest in meaning to each of the following questions.

Câu hỏi

Sally paid for her travel in advance, but it wasn't necessary.

A. Sally needn't have paid for her travel in advance.

B. Sally might not have paid for her travel in advance.

C. Sally may not have paid for her travel in advance.

D. Sally couldn't have paid for her travel in advance.

Chuyên đề ôn thi: Động từ khuyết thiếu (1)