参考答案:
1. --- How often do you have piano lessons? --- Twice a week, on Wednesday and Friday.
2. What do you usually do on weekends?
3. How many hours do you sleep every night?
4. We found that only fifteen percent of our students exercise every day.
5. We were surprised that ninety percent of them use the Internet every day.
6. We think the best way to relax is through exercise.
7. It is good to relax by using the Internet or watching game shows.
开心一笑:
He won
   Tommy:    How is your little brother, Johnny?
   Johnny:    He is ill in bed. He hurt himself.
   Tommy:    That's too bad. How did that happen?
   Johnny:    We played who could lean furthest out of the window, and he won.
Note: We played who could lean furthest out of the window, and he won. 我们做游戏,看谁能把身子探出窗外最远,他赢了