问题
选择题
I was really anxious about you. You _______ have left home without a word.
A．mustn't
B．shouldn't
C．needn't
D．couldn't
答案
答案：B
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I was really anxious about you. You _______ have left home without a word.
A．mustn't
B．shouldn't
C．needn't
D．couldn't
答案：B