问题补充:
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. used to be;smoking
B. used to have;smoking
C. used to be;smoke
D. used to have;smoke
解析:考查动词。本题考查there be句型及be used to doing习惯于做某事,选A。