题目内容
You ________ all those calculations! We have a computer to do that sort of thing.
[ ]
A.needn’t have done
B.shouldn’t have done
C.must not have done
D.cannot have done
答案:A
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题目内容
You ________ all those calculations! We have a computer to do that sort of thing.
A.needn’t have done
B.shouldn’t have done
C.must not have done
D.cannot have done