1:She must have left early this morning(A)she?2:she must have left(B)she?A:didn't B:hasn't为什么这样选?
參考答案:B因为前句中有have
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1:She must have left early this morning(A)she?2:she must have left(B)she?A:didn't B:hasn't为什么这样选?
參考答案:B因为前句中有have