Question

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

Answer 1

答案A
“过去曾经有……”用“There used to be…”表示“有人干某事”用“There be someone doing sth．”表示。故选A。