1. I didn't go to school yesterday because I was sick.
2. Although Lan can sing very well, she can't play the piano.
3. Tea is the most popular drink in London.
4. Who will Liz send these letters?
5. No river is as long as the Nile river.
6. This is the first time she has came here.
7. Beckham played football very good.
8. It's very hot here. Open the window, please!
9. What did she play in the school yard yesterday?
10. I was watched TV yesterday. 11.Please, be quiet.
12. Khoa is the most intelligent in our class.
13. If we use the car all the time, we will make the air dirty.
14. This is the first time Nam has been to the stadium for a football match.
15. I was played the computer games. 16. I won't come to class tomorrow.
17. How often does your father play tennis?