Li Yundi is one of _____ pianists in China now and he showed up at the 2012 Spring festival Gala.
----How terrible the air is! Yes,if there are ___trees, there will be ___air pollution in our city.
—Will you buy the white watch or the red one ? ----I’ll take_____.One is for my mother and the other is for my sister.
—What is he going to ______ when he ______ up? —He’s going to be a doctor.
I had _____useful umbrella when it rained.
—Jim, remember to return this book by Friday. — .