题目内容
—Why? Tom,your skirt is so dirty!
—Mum, I my storeroom downstairs.
A.cleaned B.have cleaned
C.was cleaning D.have been cleaning
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题目内容
—Why? Tom,your skirt is so dirty!
—Mum, I my storeroom downstairs.
A.cleaned B.have cleaned
C.was cleaning D.have been cleaning