—Youdidn’twaitforMr.Smithlastnight,didyou?—Yes,butwe

问题详情：

 —You didn’t wait for Mr. Smith last night, did you?

—Yes, but we ________. He didn’t return home at all.

A. don’t have to  B. needn’t have C. didn’t need to ld have

【回答】

B

知识点：情态动词

题型：选择题