问题

Look! Somebody_______ the sofa.-Well, it wasn’t me. I didn’t do it.
A:is cleaning
B:was cleaning
C:has cleaned
D:cleans
B:was cleaning
C:has cleaned
D:cleans
正确答案是:
同类题型
Who__________ English last term?—Mr. Wu did.
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Mr Liu is a very popular doctor, so he is always busy______his work.[ ]