问题描述: The guards don't allow( )in their factory ,是填to smoke 还是smoking? 1个回答 分类:英语 2014-10-11 问题解答: 我来补答 smokingallow的宾语用法简单点说就是有sb用to do(allow sb to do sth),没sb用doing(allow doing sth)这个题目后面直接用动词的话就是smoking 展开全文阅读