The American girl has a good          of Chinese and can express herself freely in the language.

Not having a good ________ of English can be a serious disadvantage to achieving your goals.

Whenever she sees the ______ of bloody fighting on the screen, she will cover her eyes with her hands, ______at them. 

Many people coming from all over the country arrived at the same ____, a small village, to attend a live meeting.

Computers are of great        to the development of science and technology.