Question

—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

Answer 1

C
解析　答語句意為：你沒有必要買，因為家里還有很多。故應用needn’t have done表示本不必做而實際上做了。could have done 表示過去本可以做某事卻沒做；should have done表示本應該做而實際上未做；mustn’t表示禁止。