EXE II. Combine
1. If a person looks at the sky at night, he won't be able to see the Milky Way by naked eyes.
2. If noise pollution happens regularly, it will cause stessor nuisance
3. If noise pollution gets more serious in the future, it will affet the development ... society
4. If Australia invests in water in Vietnamwith good results, half of the population in the rural areas will have access to fresh water.
5. If you use compact light bulbs, you will save a lot of energy.
6. If we have more space, we will plant more trees.
EXE I. Supply
1. would be
2. didn't go
3. use
4. doesn't want
5. took
6. drive
7. will visit
8. will accept
9. would be
10. would happen
11. got
12. show
13. would be
14. turned
15. will forgive
16. would have brought
17. would have been
18. wouln't have printed
19. wouldn't buy
20. would drive
EXE III. PUT THE VERBS
1. saw - were trying
2. was walking - felt
3. were driving - appeared
4. was she driving - happened
5. was waiting - came
6. invited - was visiting
7. didn't want - waited
8. rang - was watching
9. began - was sitting
10. went - were having
1. came - were watering
2. was talking
3. was practising - was reading
