(2011·湖南)One－third of the country ________ covered with trees and the majority of the citizens ________ black people

Don’tforget (别忘了)tosay _______ after someone helps you.

How can I stay in shape — A well-balanced diet together with regular exercise ______ you’ll make it.

The news that the scientists in China are trying the ways to reduce the fog and haze was —- Top notch! Never have I seen _____ before。

下列加点词意义和用法有误的一项是