Mark the correct form of the verbs.
1. If there is more people, they … more food, houses and energy.
a) need c) won’t need
b)will need d) needed
2. If our springs and summers … very hot, there won’t so much snow in winter.
a) are c) won’t
b) will be d) is

3. We won’t have enough water in the future if we … it.
a) don’t save c) save
b) doesn’t d) will save
4. If there is a rubbish everywhere, it … dangerous for wild animals.
a) won’t be c) aren’t
b) are d) will be
c) will be in danger
5. If the air … not clean, you’ll have to wear a mask.
a) is c) isn’t
b) are d) aren’t
6. If we … the habitat, many plants and animals will be in danger.
a) will destroy c) won’t destroy
b) destroy d) destroyed