Question

【题目】Only after Mary read her composition the second time__the spelling mistake

A.did she notice

B.she noticed

C.does she notice

D.she has noticed

Answer 1

【答案】A

【解析】句意：直到第二次读了她的作文之后玛丽才注意到这个拼写错误。“only+状语从句”置于句首时，主句主谓要部分倒装，即助动词置于主语前。其次，根据after引导的从句的时态可知，该句要用一般过去时。