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You ________ all those calculations!We have a computer to do that sort of thing.A) needn’t have doneB) must not have doneC) shouldn’t have doneD) can not have clone

分类: 作业答案 • 2022-07-21 17:52:42

问题描述：

You ________ all those calculations!We have a computer to do that sort of thing.
A) needn’t have done
B) must not have done
C) shouldn’t have done
D) can not have clone

答

A,本不必

You ________ all those calculations!We have a computer to do that sort of thing.A) needn’t have doneB) must not have doneC) shouldn’t have doneD) can not have clone

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