13. Continue the sentences with your own ideas.
1) Children will be aware of the importance of recycling...
2) If we keep polluting our planet...
3) When we use recycled paper and glass...
4) As soon as the environmental issues are taught at school...
5) Unless scientists find cures for all major diseases...
6) In case a huge meteorite strikes the Earth...
7) Providing petrol is very expensive...

1) Children will be aware of the importance of recycling if parents and teachers explain to them about the problem.

2) If we keep polluting our planet, new generations will have no place to live in.

3) When we use recycled paper and glass, we do better for our planet.

4) As soon as the environmental issues are taught at school, more people will be aware of the problems.  

5) Unless scientists find cures for all major diseases, many people can die.

6) In case a huge meteorite strikes the Earth, no living thing will survive.

7) Providing petrol is very expensive and unfriendly to the environment.

Объяснение: