He didn’t come yesterday. He ______ busy working in the lab.A、must beB、would ha

游客2025-03-15 18

问题 He didn’t come yesterday. He ______ busy working in the lab.

选项 A、must be
B、would have been
C、must have been
D、would be

答案 C

解析本句的时间状语是“昨天”，意思是：“他昨天没来，一定是忙着在实验室工作。”Would have done表示与过去事实相反的假设的虚拟语气，而must have done表示对过去的肯定推测。因此选C。

转载请注明原文地址:https://www.tihaiku.com/zcyy/3997421.html

相关试题推荐

随机试题

最新回复(0)

Iwanttousethesamedictionary______wasusedyesterday.A、whichB、whoC、what