7.Hemusthavehadanaccident,orhe____then.[A]wouldhavebeenhere[B]hadtobehere[C]shouldbehere[D]wouldbehere、
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题目内容：
7.He must have had an accident,or he ____ then.
[A] would have been here[B] had to be here[C] should be here[D] would be here
、
优质解答
A
虚拟语气
要不他已经到这儿了
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