— Why? Tom, your shirt is so dirty!— Mum, I my storeroom downstairs。A. cleanedB. have wo

发布时间：2020-08-16 07:50:39

— Why? Tom, your shirt is so dirty!
— Mum, I      my storeroom downstairs。
A. cleaned
B. have worked
C. was cleaning
D. have been cleaning

网友回答

A. cleaned
B. have worked
C. was cleaning
(答案→)D. have been cleaning
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