Question

We ________ for her because she never came．

[　　]

A．mustn't have waited

B．shouldn't have waited

C．mustn't wait

D．needn't wait

Answer 1

答案：B
解析：

should not have done表示“过去不应该做而做了某事”，含有“后悔，责备，劝告，批评”之意。