单选题
He didn't allow ______ in his room, actually he did not allow his family at all. A. to smoke ... to smoke B. smoking ... to smoke C. to smoke ... smoking D. smoking ... smoking
【正确答案】
B
【答案解析】[解析] allow作动词，意为“允许”，既可跟复合宾语，也可跟动名词作宾语，即可用于下面两种结构：“allow sb．to do sth．”和“allow doing sth．”结构，例如：We do not allow people unconcerned to enter the conference room．我们不允许无关人员进入会议室。例如：We don’t allow smoking in the hall．大厅里不允许吸烟。由此我们可以看出，只有B最合题意，为正确答案。