There is no light in the dormitory．They must have gone to the lecture, ? [ ] A．d
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![There is no light in the dormitory．They must have gone to the lecture, ? [ ] A．d](/pic/43_888780.jpg)
There is no light in the dormitory．They must have gone to the lecture, ________?
[]A．didn’t they
B．don’t they
C．mustn’t they
D．haven’t they
试题答案
答案：D
解析：考查情态动词表示推测意义的反意疑问句的用法。此句情态动词表示推测意义，句子相当于“I’m sure that they have gone to the lecture”，故其反意疑问句的简短问句为“haven’t they?”如果语境中有明显的过去的时间状语时，此时，该考虑助动词did。如：They must have gone to the lecture last night, didn’t they？他们昨晚去参加演讲了，对吗？ |