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?

问题描述:

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?

allow doing sth 允许做某事

词组。allow doing

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.