You all _______________those calculations! We have a computer to do that sort of thing.

题目类型: 单选题

题目内容

You all _______________those calculations! We have a computer to do that sort of thing.

题目选项

A. must not have done
B. needn’t have done
C. can not have done
D. shouldn’t have done

正确答案

B

题目解析

第二句话表明原来进行的计算根本没必要。

题目纠错