A
necessary \ important \ natural\ vital \essential 等形容词后
要（should） + 动词原型
即,虚拟语气
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It is necessary that he __________for Beijing right now.A.leave B.leaves C.will leave D.left
It is necessary that he __________for Beijing right now.A.leave B.leaves C.will leave D.left
选什么?为什么?
选什么?为什么?
英语人气：472 ℃时间：2019-11-14 06:35:53
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