I believe he ______an accident, otherwise he would have arrived on time.

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问题 I believe he ______an accident, otherwise he would have arrived on time.

选项 A、would have had
B、could have had
C、should have had
D、must have had

答案D

解析 “主语+must +have+过去分词”结构,表示对过去事实的推测。例如:The road is wet. It must have rained last night. (路是湿的,昨晚肯定下雨了。).I didn’t hear the phone. I must have been asleep. (我没有听见电话铃响,我肯定是睡着了。)
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