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【题目】Frank, where have you been? We _____ you since 2 o’clock.

A. have been waiting for B. are waiting for

C. had waited for D. waited for

【答案】A

【解析】

试题分析:考查动词的时态。句意:弗兰克,你去哪了?自从两点我们就在等你。根据since 2 o’clock自从两点可知用现在完成时,这个动作一直在持续,故用现在完成进行时;

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