题目内容
【题目】It was not until all the fish in the pond died that________ the situation was serious.
A. did he realize B. he realized
C. he had realized D. had he realized
【答案】B
【解析】
试题分析:考查强调句。句意:直到池塘里所有的鱼都死了,他才意识到问题的严重性。强调句结构it is that,that后接完整句子,故选B项。
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