题目内容

It was not until ________ that ________ to prepare his lessons.

[  ]

A.did his father come in; the boy began

B.his father came in; the boy began

C.did his father come in; did the boy began

D.his father come in; did the boy began

答案:B
解析:

强调时间状语从句。在强调句型中,即使强调否定结构也不用倒装。D项时态不对。


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