题目内容
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
D
解析:
解本题一定要注意审题，要把题目看完整，才不会想当然选C，根据后文的for he always has good manners可以断定“他不可能不打招呼就离开”，用can’t have left.
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