1. If we plant more trees,the air will be fresher.
2. If we use fewer cars,we will reduce pollution.
3. If we cycle to school every day,we will keep fitter.
4. If we use recycled products ,we will save money.
5. If people throw rubbish into the right bin ,they will keep the environment clean.
6. If we don't protect the environment ,we will destroy ourselves.
7. If she isn't more hard-working ,she will get low marks.
8. If he doesn't listen to his parents ,he will fail.
exercise 5:
1. I've never tasted such a delicious cake before.
2. Mice is the most beautiful person I've ever met.
3. Your mother is the most kind-hearted person.
4. Mr . John is the best teacher in this school.
5. Is this the biggest do you have got?
6. They have watched the movie for one hour.
7. He hasn't gone abroad before.
8. She has driven for 1 month.
9 .We have eaten since it started to rain.
10. I have never talked to the foreigner before.
# NO COPY - GOOD LUCK TO YOU-
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