问题描述：
I was really anxious about you. You ________home without a word A.mustn’t have
I was really anxious about you. You ________home without a word
A.mustn’t have B. shouldn’t have left C. couldn’t have left D. needn’t have
I was really anxious about you. You ________home without a word
A.mustn’t have B. shouldn’t have left C. couldn’t have left D. needn’t have
问题解答：
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