It’s rather cold in the room. They______ have turned off the steam a few hours a

游客2024-08-04 40

问题 It’s rather cold in the room. They______ have turned off the steam a few hours ago.

选项 A、should
B、must
C、ought to
D、could

答案 B

解析句意：屋子里相当冷，他们一定在几小时前关闭了暖气。考查must have done结构。这种结构表示对过去事情肯定性很强的推断。意思是“肯定，一定”。

转载请注明原文地址:http://tihaiku.com/zcyy/3704889.html

相关试题推荐

随机试题

最新回复(0)

—Johnhasn’tturnedupandStefanisill.______—I’mafraidnot.We’reverysho