I. REWRITETHE SENTENCES BY ANOTHER WAY
1- We can’t take a trip around Europe because we don’t have enough money.
 If we ………………………………………………………………………………………
2.Heinrich Hertz disvovered Radio Waves.
=> Radio waves.........................................................................................................................
3. The wind blew our tent over in the night.
=> Our tent................................................................................................................................
4. People played chess for around two thousand years.
=> Chess.......................................................................................................................................
5. Have you won the gold medal? 
=> Has the gold medal............................................................................................................?
6.I am not a president so I can’t do anything to help the people in the disaster.
=> If I were............................................................................................................................
7. I am not his mother , I can’t ask him to tidy his room everyday.
=> If I.......................................................................................................................................
8. The beach isn’t clean, so there aren’t more tourists here.
=> If the beach...............................................................................................................................
9. The polluted from the air makes people were ill.
=> Because people breath...........................................................................................................
10. The fumes from cars make people cough.
=> Because people breath............................................................................................................
11. I am not you so I can’t buy this house.
=> If I........................................................................................................................................
12. Eating too much sugar can result in health problems .( lead to)
=>.............................................................................................................................................
13- Since some people have drunk contaminated water, they need medical help 
 Some people have drunk contaminated……………………………………………………
14. All flights had to be cancelled as a result of the pilot’s strike . ( so)
=>..............................................................................................................................................
15. If you could swim , you would go scuba diving with Terry. ( because)
=> ..........................................................................................................................................
(Because I can’t swim, I am not go go scuba diving with Terry)
16. The storm had weakend when the rescue workers arrived in the area.
=> After....................................................................................................................................
17.The water temperature increases. Some aquatic creatures are unable to reproduce.
=>...............................................................................................................................................
( Combine each pair sentences to make a conditional sentence Type 1)
18.People get more diseases. The air is polluted.
=>..........................................................................................................................................
( Combine each pair sentences to make a conditional sentence Type 1)
19.Students are more aware of protecting the environment. Teachers teach environmental issues 
at school.
=> ............................................................................................................
( Combine each pair sentences to make a conditional sentence Type 1)
20.There are so many billboards in our city. People can’t not see clearly.
=> ……………………………………………………………………………………………
Combine each pair sentences to make a conditional sentence Type 2)
21. We turn on the lights all day. We have to pay a lot of money for electricity a month.
=>………………………………………………………………………………………….
( Combine each pair sentences to make a conditional sentence Type 2)
22.People throw litter on the ground. Many animal eat litter and become sick. ( because) 
=>......................................................................................................................................
23. He can’t see the stars at night.There is too much light pollution. ( due to)
=>...................................................................................................................................................
24- My father finished repairing our roof, then he went to help our neighbors after the storm last 
night.
Before my father …………………………………………………………………………….
25. The oil spilled .Many seabirds were dead. ( because of)
=>...................................................................................................................................................
26.We have decided to cancel our picnic. It’s forecast to rain tommorrow. ( since or because) 
=>............................................................................................................................................
27. Acid rain is dangerous. Trees’ leaves are damaged. ( because of)
=>...........................................................................................................................................
28.The area is uninhabitable. The Chernobyl nuclear accident happened. ( Make)
=>...........................................................................................................................................
29.Noise pollution happens. There is a change in animals’ living pattern. ( causes) 
=>.........................................................................................................................................
30. They quickly send food and medical supplies to the victims of the typhoon
 Food and medical ………………………………………………………………………
31. I am poor so I can’t buy this expensive car.
=>..........................................................................................................................................
( Combine each pair sentences to make a conditional sentence Type 2)
32. They are going to service our car by a mechanic tomorrow morning.
=>Our car is going.................................................................................................................
33.I am not you, but I think you should recycle these plastic carrier bags. 
=>If........................................................................................................................................
(a conditional sentence Type 2)