1. The subjects are interesting. We talk about them in class.
→....The subjects are interesting so we talk about them in class....
2. Mary is reading an English novel. It is interesting.
-> The English novel ...which Mary is reading is interesting ...
3. We used the map. My sister drew the map for us. (which)
→....We used the map which was drawn by my sister ...
4. The street is very wide. The street leads to my school. (which)
→ ....The street which leads to my school is very wide. ...
5. The radio has suddenly stopped working. It is not very old. ( which) →......The radio which is not very old has suddenly stopped working...
6. They live near a lake. The lake is heavily polluted
→ ..They live near a lake which is heavily polluted.
7. The clothes is unusual. Tom is wearing the clothes. (which)
→...Tom is wearing the clothes which is unsual ......
8.The house is mine. Its windows need painting. (whose)
→...The house whose windows need paiting is mine..
9. The man called the police. His wallet was stolen. (whose) →...The man whose wallet was stolen called the police ...
10. The man seems very lonely. His wife and children are away. (whose) →.....The man whose wife and children are away seems very lonely ..
11. Amanda has now lost her job. Her husband died last year. (whose) →....Amanda whose husband died last year has now lost her job ...
12. She was not on the board now, so she can't experience these marvelous things.
→If she ...were on the board now, she could experience these marvelous things...
13. Because the buses are full up, they do not stop.
→ If ....the buses weren't full up, they would stop .....
14. They won't go swimming if it rains.
→If it doesn't ......rain, they will go swimming .....
15. I'm not rich, so I can't buy that house.
-> If ....I were rich, I could buy that house.....
16. We don't have enough money, so we can't buy that house.
→If ....we had enough money, we could buy that house....
17. The weather is bad so we can't go for a walk.
→If ....the weather weren't bad, we could go for a walk.....