问题
选择题
There____many people____in the office, but now nobody is allowed to.[ ]
A.used to be;smoking
B. used to have ; smoking
C. used to be;smoke
D. used to have ; smoke
答案
答案：A
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There____many people____in the office, but now nobody is allowed to.[ ]
A.used to be;smoking
B. used to have ; smoking
C. used to be;smoke
D. used to have ; smoke
答案：A