1. I / enjoy / play / sports / because /it /good /health /.
⇒ I enjoy playing sports because it good for my health.
2. he / find / mountain climbing / dangerous / so / he / not take / it /.
⇒He find that mountain climbingg is very dangerous so he doesn't take part in it.
3. how many calories / you / burn / do / aerobics / 2 hours / ?
⇒ How many calories can you burn if you do earobics for 2 hours?
4. getting / enough / sleep / help / students /do / their best /the classroom /.
⇒ Getting enough sleep can help students do their best in the classroom.
5. so far /we /ask /people / donate / books and clothes / the poor children /
⇒ So far, we have asked people to donate books and clothes for the poor people.