1,If we recycle materials, we'll save natural

2, If he comes, I will be supri...

3,If we wait here, we will be late

4,If I don't go bed early, I will be tired tomorrrow 

5,She will take a taxi, if it rain 

6,If the sea gets warmer, the ice in the North and South Poles will melt.

7,If the ice in the N and S Poles melts, the sea level will rise..

8 If the sea level rises, there 'll be floods in many parts of the world..

9,If there're floods in many parts of the world, many people 'll lose homes and lands..

10,If many people lose homes and lands, they'll live in hunger and poverty.

##Hok-Tott

1. If we recycle materials, we'll save nature.

2. If he comes, I will be surprised.

3. If we wait here, we will be late.

4. If I don't go to bed early, I will be tired tomorrow. 

5. She will take a taxi if it rains. 

6. If the sea gets warmer, the ice in the North and South Poles will melt.

7. If the ice in the North and South Poles melts, the sea level will rise.

8. If the sea level rises, there'll be floods in many parts of the world.

9. If there're floods in many parts of the world, many people will lose homes and lands.

10. If many people lose homes and lands, they'll live in hunger and poverty.