You______ all those calculations! We have a computer to do that sort of thing. （3.0分）0.0 分 A、 needn’t have done B、 must not have done C、 shouldn’t have done D、 can not have done

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题目内容（兰州工业学院大学英语1）

You______ all those calculations! We have a computer to do that sort of thing.

（3.0分）0.0 分
A、
needn’t have done

B、
must not have done

C、
shouldn’t have done

D、
can not have done

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