Mr. Liu born in a poor family, _____a lot of suffering when still a child.

 After working for two years, Tim Martin was ______ as the top manager in charge of the company.

When asked about the secret about staying young, he said that a balanced diet __________ with exercise was the recipe for a healthy life.

(2013·新课标全国卷Ⅱ)The watch was very good, and he ________ 20 percent down for it.

The professor ______ his voice to make himself ______.