Question

单项填空(每小题分，共15分)

1. We don't allow        in the lecture hall,so you are not allowed        here.

A.smoking;smoking       B. to smoke;to smoke                       C. smoking;to smoke      D. to smoke;smoking 

Answer 1

.l.C allow doing sth.意为“允许做某事”，排除B、D两项；be allowed to do sth.意为“被允许做某事”，故选C。