on

Let’s hang up some paintings on these ____ walls.

We can depend on Bob to make a _____ choice

He never ________ being looked on as a stupid student.

Last year ______ of new books were published on environmental protection.

They began to draft ______on labour protection.

I hadn’t seen him for years, but I ____ his voice on the telephone.

A bus ____ when I was sitting on the bench.

I do not intend to follow that, because we shall have an opportunity to do so on another ______.

We cannot judge a person simply on the ______ of this education.

Jack told Mary he ____some snacks to her house if he _____to see her on Friday night.