II. Rewrite the sentences so that the second sentence means the same as the first one.
1. Tim didn’t join the summer camp because he was sick.
→ Because of___________________________________________________________
2. Water pollution happens. Many aquatic animals such as fish can die.
→ Water pollution leads___________________________________________________
3. We should stop cutting down so many trees. We endanger our oxygen supply.
→ Unless______________________________________________________________
4. We arrived at the cinema, but the film had finished.
→ By__________________________________________________________________
5. I don’t know her number, so I don’t ring her up.
→ If___________________________________________________________________
6. I last saw Barack six months ago.
→ I haven’t_____________________________________________________________
7. Don’t leave the tap running while brushing your teeth, or you will waste water.
→ If you_______________________________________________________________
8. If he doesn’t work hard, he will not pass his exam.
→ Unless______________________________________________________________
9. Vy ate a lot last night, so she had a stomachache.
→ Because_____________________________________________________________
10. Acid rain is dangerous. Trees’ leaves are damaged.
→ Because of___________________________________________________________
11“I’ll see you here next Friday.” Tom said to me.
→ Tom________________________________________________________________
12. Nick said to Sarah, “I may see you next week before I leave.”
→ They________________________________________________________________