Mark the correct form of the verbs: 1. If we … trees, we’ll have a lot of them.
a) protect c) will protect
d) protected d) won’t protect.
2. If you take a quick shower, you … the water.
a) save c) won’t save
b) will save d) don’t save

3. If you … leave the light on when you leave the room, you’ll save the energy.
a) leave c) left
b) don’t leave d) won’t leave
4. If you … bike or public transport instead of car, you’ll reduce the amount of greenhouse gases.
a) won’t use c) use
b) used d) will use
5. If you buy recycled and recyclable items, you … to protect the environment.
a) will help c) won’t help
b) helped d) helps
6. Many species ….. if we cut down the rainforests.
a) disappear c) will disappear
b) disappeared d) disappears