Itisimperativethatyou___hereintime(a)shallarrive(b)mustarrive(c)couldarrive(d)arrive
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题目内容：
It is imperative that you ___ here in time
(a)shall arrive(b)must arrive(c)could arrive(d)arrive
优质解答
It is imperative that.：.是必要的.
后面只能用动词原形,所以选D.
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