Look! What a clean room! Who _______it ?
A．has cleanedB．is cleaning
C．will cleanD．cleaned
A

試題分析：句意:看！多么干凈的房間啊!誰打掃的？結合語境可知下文描述的是現(xiàn)在已經(jīng)完成的動作，故用現(xiàn)在完成時態(tài)，故選A。
點評：英語中的時態(tài)主要是借助于時間狀語與上下文語境來進行判斷。解答此類題型，首先要注意句子中的時間狀語，如果沒有則要通過分析上下文，結合語境來判斷句子的時態(tài)。英語疑問句中一般具有時態(tài)上的對應關系，可以結合這一特點進行區(qū)分。
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