1. I was tired, …………… I couldn’t go to work.
2. Nam was absent from school yesterday ___________ he was ill.
3. What about ____________ soccer?
4. Why not ____________ garbage bags and take them to the garbage dump?
5. Smoke causes __________ pollution.
6. Nam went to the cinema, ___________ he?
7. Mrs Hoa has just returned from England,__________she?
8. They have lived here ___________ ten years.
9. He has driven ___________ he was eighteen.
10. Let’s ues bananas leaves to wrap food instead ___________ paper or plastic bags.
11. I think you ________ go to school or go to work by bike ___________ of by motorbike or by car to save energy.
12. If you work harder, you _________ pass the next exam.
13. Study hard _________ you will not pass the exam.
14. My sister is very keen ___________ planting roses.
15. It’s a pity for me as _________ as for most of my friends in the countryside.
16. I can not easily access __________ the Internet.
17. Mai uasully gets up late in the morning, ___________she?
18. Let’s go to the beach, _________ we?
19. You have to do your homework, ___________you?
20. If the paddies ____________ polluted, the rice plant will die
