It is the prevention of disease_____ its successful treatment that has led to the rapid increase of the world’s population

Did you like the movie—Yes.Yang Yang ________ quite well in it.

On the Eve of the Spring Festival, we Chinese people like to play with fireworks, and the noise doesn’t ____ until after midnight．

How strange! These years my birthday always falls _____.

If there are _____people driving, there will be ______air pollution.—Yes, the air will be fresher and cleaner.