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        1. Look, so many people are running out of the station. I wonder what ________.

          A.is happenedB.was happening
          C.is happening D.had happened

          C

          解析試題分析:句意:看,這么多人正從車站里跑出來。我想知道發(fā)生了什么事。根據(jù)Look, so many people are running out of the station.可知此處人們正從車站跑出來,表示正在發(fā)生的事,故選C。
          考點:考查時態(tài)的用法。

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