题目内容：

We don’t allow _____ in this room.
We don’t allow __A____ in this room.
A.smoking B.to smoke C.people smoking D.people to smoking
为啥不选B?

优质解答

习惯表达
allow doing sth.允许做某事
allow sb.to do sth.允许某人做某事
一般不说allow to do sth.