Exercise 4.
1. sports
2. twice
3. jogging
4. swimming
5. doing
6. racing
7. gym
8. badminton
9. aerobics
10. games
Exercise 5:
1. There are two main kinds of sports.
2.They are baseball, basketball, volleyball.
3.There are two separate teams.
4. Because they compete against each other in order to get the best score.
5. They sometimes called competitive sports.
Exercise 6:
1. What time did you go gym yesterday ?
2. My brother 's favorite sport is volleyball.
3. Did you play blind man's bluff when you was young ?
4. I'm more interested in playing football then playing table tennis.
5. Our team won the match last saturday.
Exercise 7:
1. My father likes tennis very much.
2. My mother swims very fast.
3. Lien isn’t very interested in doing sport very much.
4. Minh is very good in playing football.
5. We take part in a lot of outdoor activities in summer.
` Kẹo`