Only when we had finished all the work ______ that it was too late to take a bus home.

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问题 Only when we had finished all the work ______ that it was too late to take a bus home.

选项 A、did we realize
B、will we realize
C、we did realize
D、we will realize

答案A

解析 本题考查倒装句的用法。一般来说,否定副词和含有否定意义的词如never,seldom等置于句首时,句子结构需要倒装。例如:Never have I felt better.(我从未感觉到如此棒。)又如:Seldom have I seen such a remarkable creature.(我很少见有如此杰出的人。)还有以only修饰状语开头的句子,要部分倒装.此外题目中的had finished和was too late提示句子的时态是过去时,故选A项did we realize。
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