I: Put the words or phrases in the right order to make sentences.
1. If/ is polluted/ fish/ the river/ will die.
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2. We/ recycle/ rubbish/ should/ try to.
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3. Don't throw/ plastic bags/ the/ because/ can reuse them/ you.
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4. You/ should/ when/ use reusable bags/ you go shopping
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5. If/ there/ people recycle more/ pollution/ will be less.
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II. Write conditional sentences from these statements.
1. We will plant more trees. The air will be fresher.
If......................................................................................................................
2. We will use fewer cars. We will reduce pollution.
If..........................................................................................................................................................
3. We will cycle to school every day. We will keep fitter.
If..............................................................................................................................................................
4. We will use recycled products. We will save money.
If..........................................................................................................................................................
5. The boy eats so many green apples. He will be ill.
If..........................................................................................................................................................
6. We will use reusable bags for shopping. We will reduce waste.
If..........................................................................................................................................................
7. She doesn't hurry. She is late for school.
If............................................................................................................................................................
8. You don't water the plants. The die.
If.............................................................................................................................................................
