―Is that Miss Liu having dinner over there?
―It     be her. She has gone to New York for an important business meeting.
A．mustn’tB．needn’t C．can’tD．shouldn’t
C
本題回答語的含義是劉小姐去了紐約參加重要的會議，所以在那邊吃飯的不可能是劉小姐，can’t表示不可能的含義，故本題選C。
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