问题 选择题
—Look,I’ve bought some bread,including your favorite flavor.
—You ________ any because we still have plenty at home.
A.should have bought
B.could have bought
C.needn’t have bought
D.mustn’t have bought
答案

C

解析 答语句意为:你没有必要买,因为家里还有很多。故应用needn’t have done表示本不必做而实际上做了。could have done 表示过去本可以做某事却没做;should have done表示本应该做而实际上未做;mustn’t表示禁止。

多项选择题
多项选择题