According to the original design, the plant would be able to _______ at least 8,000 pianos a year.

Judging by the ________ he keeps, Mark must be an extremely wealthy man.

Some students have trouble        grammar while others have difficulty        new words．

You’d better          your scores and see if you have passed the exam．

I ___________ my father to give up smoking, but he didn’t listen to me.

This book ____ 12 units, _____ the unit of Music. 

It has been reported that some government leaders ______ their authority and position to get illegal profits for themselves.

Don’t you realize the ________these chemicals are doing to our environment?

I’ve got to go now. Something has just______ at school and I’m needed there.

The college ______ 7 departments, 4 institutes, and Teaching Division of Basic Computer Science and Basic Lab Center.