6. Stay here and you will feel save.
If.
7. Pay electricity bill today or your electricity will be cut off.
If
8. Stop smoking otherwise your cough may be worse.
If
9. Unless we use less fossil fuel, they will be run out soon.
If .
10. Unless it stops raining today, we may be faced with a serious flood.
If.
11.Do morning exercises regularly, your body will be fitter.
If
12. Unless we renewable energy, we will have nothing for the future generation.
If
13. The climate will change unless we reduce the use of non-renewable energy.
If
14. Lock all the doors and noone can break into
your
house.
If.
15. Unless we continue hunting polar bears, they will become extinct in near future.
If
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Sinh Học lớp 12
