单选题
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试题题干

Only then( )that she had made a mistake.

A

she realized

B

did she realize

C

had she realized

D

she had realized

参考答案

正确答案:

试题解析

本题考查倒装句型。以“only+状语或状语从句”开头的句子要用倒装结构,即把助动词放在主语前。then意为“那时”,表示过去,所以要用一般过去时。

句意:只有到那个时候,她才意识到自己犯了个错误。