He mast have had an accident, or he ______ now.

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问题 He mast have had an accident, or he ______ now.

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

答案D

解析由上下文意思可以得出，or“否则”表示一种转折关系，上文使用must+完成时态，表示对过去事情的推断，根据句子意思及时间副词now可推断D为正确选项，这是一种混合时态的用法。

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专业英语四级

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