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Ex2/
1. It's high time the City Council did something about the city's traffic problems.
2. It looked as if it had been unoccupied for several years. 
3. It is time for the children to start doing their homework now.
4. It looks as if fares are going to go up again this summer.
5. It's high time for you to acquire a few manners.
6. It's high time you dressed yourself by now.
7. It's time we bought a new cooker.
8. It's time I got back to work.
9. It looks as if it will rain.
Ex3/
1. to talk
2. listening/watching
3. paid
4. to go

Ex 2: 1. the City Council did sth ... (It's high time + S + V-ed/P2)

2. the house had been ... (S + V + as if + S + V(past))

3. the children started doing ... (It's time + S + V-ed/P2)

4. fares would be ...

5. you acquired a ...

6. time you could dress yourself ...

7. necessary to buy ...

8. necessary to get ...

9. as if it might rain.

Ex 3: 1. talked

2. listening/ watching (prefer V-ing to V-ing)

3. paid

4. gone