Question

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.

Answer 1

If we fly less when we travel, it will reduce pollution.
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Some endangered species will become extinct if we don't protect them.
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We won't be late if Dad gives us a lift.
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If our natural resources run out, humans won't have enough energy
to survive on Earth.
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More people will have homes if we build larger houses.
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Небольшое правило:
Если предложение стоит перед if, unless, when, мы используем Present Simple.

Answer 2

1. If we fly less when we travel, it will reduce pollution.
6. Some endangered species will become extinct if we don't protect them.
7. We'll not be late if Dad gives us a lift.
8. If our natural resources run out, humans will not have enough energy.
9. More people will have homes if we build larger houses.

Answer 3

1 If we fly less when we travel, it will reduce pollution. 6 Some endangered species will become extinct if we do not protect them. 7 We will not be late if Dad gives us a lift. 8 If our natural resources run out, humans will not have enough energy to survive on Earth. 9 More people will have homes if we build larger houses.