关于allow doing和allow to
问题描述：
关于allow doing和allow to
People are not allowed _ freely at the meeting and they don't allow _ either.
A.to talk;smoking B.to talk;to smoke C.talking;smoking D.talking;to smoke 顺便请讲下后面一个空为什么这么选
答
A
allow doing sth
be allowed to do sth