I. Put the verbs in bracket in correct tences
1. Before he ( go ) ..... to visit me , he ( telephone ) ..... me
2. He told me he ( not / meet ) ..... such kind of people before
II . Rewrite the following sentences
1. Mr.Quang works in a noisy envirenment . His hearing becomes worse ( if )
2. I can*t tell you unless you tell me what*t wrong ( if )
3. Acid rain is danerous . Trees* leaves are damage ( because of )
4. Fossil fuels such as coal or oil are burned . Acid gases are produced ( so )
5. Eating too much sugar can result in health problem ( lead to )
6. We had lunch then we took a look around the shops
Before ...................................................................
7. The light had gone out before we got out of the office
When ...........................................................
8. After she had explained everything clearly , we started out works
By the time ..............................................................
9. My father had watered all the plants in the garden by the time my mother came home
Before ..........................................................
Loga
Sinh Học lớp 12
