题目内容
19、There is no light on dormitory. They must have gone to the lecture, ______?
A. didn’t they B. haven’t they C. mustn’t they D. don’t they
试题答案
19、B
相关题目
题目内容
19、There is no light on dormitory. They must have gone to the lecture, ______?
A. didn’t they B. haven’t they C. mustn’t they D. don’t they
试题答案
19、B