题目内容：

My father doesn't allow ___ in his study nor does he allow the whole family ____ at all.
A.smoking; to smoke B.to smoke; smoking C.smoke; to smoke D.smoking; smoke
Which one?why?

优质解答

A
allow用法有2种：
allow doing sth---允许做某事.
allow sb to do sth---允许某人做某事.
就是说allow后面加人的时候就用不定式to do.不然就加动词ing形式.