– What makes you so upset, Mr. Wang?– That John, a student in my class, ______ himself to computer games.

It was proved that the problem __ partly in the air pollution.

He is __________ honest boy. And he is __________ student in our class.

rpose of the advertisements is to______people’s attention, _____them to buy the things

I can ______ be a teacher I’m not a very patient person