At no time ____in the whole building.

At no time ____in the whole building.
A、 smoking is permitted
B、 smoking be permitted
C、 is smoking permitted
D、 be smoking permitted
【正确答案】：C
【题目解析】：考查倒装句。 at no time意思是“决不,从不”。否定短语放在句首时,后面用倒装,所以选项A. smoking is permitted和选B. smoking be permitted都是错误的。选项D. be smoking permitted没有体现时态,也不正确。所以,选C.【参考译文】整栋大楼里不准抽烟。