A good diet and some moderate exercise are ____ to good health. 

 Successful people have some good qualities and above all, they are never ________ a simple life so they keep fighting until they become top ones.

The _____house smells as if it hasn’t been lived in for years.

——How well did John do in the match?——Wonderful．I think we can’t have a _____ player in our football team．

Studies show that people are more        to suffer from back problems if they always sit before computer screens for long hours.