题目内容
--- Why? Tom, your shirt is so dirty!
--- Mum, I ______ my storeroom downstairs.
--- Mum, I ______ my storeroom downstairs.
| A.cleaned | B.have cleaned |
| C.was cleaning | D.have been cleaning |
D
由上下文语境推出一直在做某事,同时对现在产生影响,衬衫脏。
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