1. Combine the sentences, using the words in brackets
1. In the pastit was a very beautiful river. Now the water is almost black(but)
--->
2. People cannot raise fish in the river and the lake. The water there is so polluted.(due to)
--->
3. People in our area are all aware of this problem. We are thinking of some ways to solve it.(and)
--->
4. Global warming happens when there is too much carbon dioxide in the atmosphere.(causes)
--->
5. She has a headache after work every day. She works in a noisy office.(if)
--->
6. The water is polluted. The death of fish.(results in)
--->
7. The fish are dead. The water is polluted.(so)
--->
8. The polluted water. The fish die.(makes)
--->
9. The death of many aquatic animals and plants. Oil spills from ships in ocean and rivers.(lead to)
--->
10. The parents were exposed to radiation. Their children have birth defects.(since)
--->

2. Supply the correct tense of the verbs in conditional sentences
1. If you (read) in bad light you will ruin your eyes.
..................
2. Somebody (steal) your bicycle if you leave it unlocked.
.................
3. What will happen if her parachute (not open).
...............
4 . If the page-boy (wash) my car I'll given him a dollar.
...........
5. If she (need) a computer she can borrow police.
.............
6. If you (not go) away i'll send for the police.
.............
7. I'll be very angry if she (make) any more mistakes.
...........
8. If they (be) late I'll punish them.
..........
9. He'll be absolutely furious if he (hear) about this.
.........
10. If you put on the Kettle she (make) the tea.
..........
11. You can use my hand phone if yours (not work).
...........
12. If you ( not know) the meaning of a word you may use a dictionary.
............
13. If Henry (refuse) to help I'll have to manage without him.
...........
14. If Janet (not help) I'll have to manage without her.
.............
15. If you (go out) would you buy me some cigarettes.
.............
16. Mai can't count. Why you ( employ) her as a cashier if she can't count.
.........
17. You can ask for a continental lunch if you (not want) a full lunch.
..........
18. If you (hear) from HOA could you please let me know?
........
19. If you'd wait a moment I (see) if she's in.
.......
20. If you (care) to see some of his the drawing i (send) them round to your office.
.........
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3. Rewrite with conditional sentences
1. He can't go out because he has to study for his exam.
--->If
2. She is lazy so she can't pass the exam.
--->If
3. He will pay me tonight; I will have enough money to buy a car.
---> If
4. He smokes too much; that's why he can't get rid of his cough.
---> if
5. She is very shy, so she doesn't enjoy the party.
--->if
6. I will get a work permit. I will stay for another month.
--->if
7. He doesn't take any exercise. He is so unhealthy.
--->if
8. We can't get the ticket because I don't have the right change.
--->if
9. Study hard or you won't pass the exam.
--->if
10. Don't be impatient or you will make mistakes.
--->if

4. Rewrite as directed
1. Although Tom was a poor student, he studied very well.
--->In spite of
2. Many could not go to school because she was sick.
--->Because of
3. Although the weather was bad, she went to school on time.
--->Despite
4. My mother told me to go to school although I was sick.
--->In spite of
5. Because there was a big storm, I stayed at home.
--->Because of
6. Tom was admitted to the university although his grades were bad.
--->Despite
7. Although she has a physical handicap, she has become a successful woman.
--->Despite
8. In spite of his good salary, Tom gave up his job.
--->Although
9. Thought he had not finished the paper, he went to sleep.
--->in spite of
10. In spite the high prices, my daughter insists on going to the movies.
---> Even though