问题

We don’t permit _in the classroom; that is to say, students aren’tpermitted _in the classroom.[ ]

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

正确答案是：

同类题型

We are not sure whichrestaurant_______tonight

All of us thought _________ nouse talking about some unpractical matters frequently.

The lack of evidence and witness led to____.[ ]

How is your grandma—She’s fine. She used to____ TV at home after supper. But now she is used to___ out for a walk.

I found the lecture hard to follow because it _______ when I arrived.