题目内容

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

试题分析：句意:看！多么干净的房间啊!谁打扫的？结合语境可知下文描述的是现在已经完成的动作，故用现在完成时态，故选A。
点评：英语中的时态主要是借助于时间状语与上下文语境来进行判断。解答此类题型，首先要注意句子中的时间状语，如果没有则要通过分析上下文，结合语境来判断句子的时态。英语疑问句中一般具有时态上的对应关系，可以结合这一特点进行区分。
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