Question

He ________ without saying good-bye to them, for he always has good manners.

A. mustn’t have left　　　　　　　　　　　　　　　　   B. may not leave

C. shouldn’t have left　　　　　　　　　　　　  D. can’t have left

 

Answer 1

答案：D
提示：

can't 不可能。