1. If you don't reduce the use of energy, you’ll pay more for it.

2. If you didn't keep calm, you wouldn't pass your driving test.

3. Unless it rains soon,a lot of our crops will be lost.

4. If we reduce the use of water and electricity,we will not  have to pay more this month.

5.Unless someone puts the coal in, the fire will go out.

3.If you reduce the use of energy , you won't pay more for it

4.If you keeping calm , you will pass your driving test

5.Unless it rains , our crop will be good

6.If we reduce the use of water and electricity , we won't have to pay more this month

7.Unless someone puts the coal in , the fire won't go out

Chú ý: Unless=if not

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