题目内容
There is no light in the room. They must have gone to the lecture.__________?
| A.didn’t they | B.haven’t they | C.don’t they | D.mustn’t they |
B
解析
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题目内容
There is no light in the room. They must have gone to the lecture.__________?
| A.didn’t they | B.haven’t they | C.don’t they | D.mustn’t they |
B
解析