阅读短文，选择正确的答案。
“Early to bed, early to rise（起身）makes people healthy, wealthy and wise.” This is an old English saying. Children should have ten hours’ sleep every night, or they can’t do their work very well. They will not be wise. The body needs exercise. Walking, running, swimming and playing ball games are all exercise. Exercise keeps the body strong.
(     ) （1） “Early to rise” means that we must ______________ early.
A. go to school       B. get up        C. go home
(     ) （2） Children should have ______________ hours’ sleep every night.
A. 8            B. 9             C. 10
(     ) （3） Everybody ______________ exercise.
A. doesn’t need       B. needs          C. should
(     ) （4） ______________ is good exercise, too.
A. Jogging        B. Walk         C. Eating
(     ) （5） Exercise makes us ______________.
A. fat           B. stronger        C. thinner