Question

【题目】As it turned out to be a small house party, we ________ so formally.

needn’t dress up

did not need have dressed up

did not need to dress up

needn’t have dressed up

Answer 1

【答案】D

【解析】由“As it turned out…”的时态可知，事情发生在过去，所以用needn’t have dressed up“本没有必要打扮，而实际上已经打扮了”，表示与过去事实相反的假设。