Ex22.

6. Some people think that sports and games are unimportant things.

7. people working with their brain mos. of the day.

8. It makes our bodies strong and keeps us healthy.

9. It helps train the co-ordination among eyes, brain, arms and legs.

10. Play sports and games.

Ex23.

1. I haven't seen her since I left university.

2. She went out yesterday, so she has sunburn.

3. he thinks doing exercise is interesting.

4. Bacause Mary was sick, she could not go to school.

5. Eat less junk food or you will put on weight.

6. Don't read or study when there's not enough light because it is harmful to youe eyes.

7. Do more exercise, and you can be healthier and stronger.

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