Why?Tom,your shirt is so dirty! --- Mum,I ______ my storeroom downstairs. A.cleaned B.have cleaned C.was cleaning D.have been cleaning 这道题D是最佳选项.现在完成进行时的意义——从过去某一时间开始到此刻,动作一直有在进行.第一句:衣服这么脏,暗含为什么不去洗的意思;第二句:知道说话的时刻我一直在楼下忙于打扫储藏室,暗含我没有功夫洗.
Why? Tom, your shirt is so dirty! --- Mum, I __D____ my storeroom downstairs. A. cleaned B. have cleaned C. was cleaning D. have been cleaning 因为他的衣服已经脏了,所以已经打扫过了,所以应是现在完成时,又由于打扫...