题目内容
He ________ without saying goodbye 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
答案：D
解析：
解析：
|
导解：没有向他们告别，不会离开．否定的推测，从后半句可知他很有礼貌，所以应用can't． |
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