Conditional sentences type 1

1.    If we ______(plant) trees, we _____ (reduce) carbon dioxide in the atmosphere.

2.    If we ______(learn) to respect the environment, our planet_____ (be) a better place to live in.

3.    If we _____(recycle) paper, we _____(save) our forests.

4.    If we_____(not, buy) products from endangered species, we _____ (help) them survive.

5.    If we ____ (not, leave) taps running, we_____ (save) water.

6.    If we _____(not, leave) all our lights on, we ______ (not, waste) energy.

7. If we …….. save the forests of Sumatra, the Sumatran tiger won’t survive.

8. If you …….. less paper, you will save forests.

9. If we don’t protect rainforests now, many animals …….. become extinct.

10. If we stop using our cars, we …….. to end global warming.

11. I won’t buy anything from that shop unless they …….. burning coal in their factory.

12. If Jack _____________ soon, we _______________ without him.

13. Ted ________________ keep fit if he ________________ to join the school football team.

We _______________ swimming if it ________________ tomorrow.