It seems that Americans can hardly avoid ______ products made in China. 

This TV set _____ Shenzhen.

He will go on walking no matter ______ tired he is.

—Our English teacher always keeps his lessons ______. 

—That's why he is so popular among his students.

— Are Jiangsu and Zhejiang famous for silk?

— I think so. ______I know, more than half of the silk in China is produced in Jiangsu and Zhejiang. 

This kind of thing is used______ us light.

All of us find ______ necessary to take exercise every day.

— Do you like this kind of paper?

— Yes, it ______ very nice.

He was seen _____ something from the shop.

The girl was unhappy because she ______ by some boys in the class.