He must have had an accident, or he______then.

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问题 He must have had an accident, or he______then.

选项 A、would have been here
B、should be here
C、had to be here
D、would be here

答案A

解析 考查情态动词表示虚拟的用法。“must have+过去分词”表示对过去行为的肯定推测,句意为“他一定出事故了,要不然他当时会在这儿了”。表示对过去情况的虚拟,用“情态动词斗have+过去分词”,故选A。
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