2 Complete the sentences with the correct form of the verbs brackets. Use the present simple
and will.
1 If we __________ (fly) less when we travel, it __________ (reduce) pollution.
6 Some endangered species __________ (become) extinct if we __________ (not protect) them.
7 We __________ (not be) late if Dad __________ (give) us a lift.
8 If our natural resources __________ (run out), humans __________ (not have) enough energy
to survive on Earth.
9 More people __________ (have) homes if we __________ (build) larger houses.