I/
1. If Jack had got a map, he could find the way.
2. If Mary was a millionaire, she could buy a house in Tokyo.
3. If I didn't live so far from my parents, I could visit them.
4. We are taught English by Mr. Tan.
5. A nice girl was seen by me at the party last night.
6. A new primary school has just been built in my village.
II/
1. Lan should take a rest.
2. Tam shouldn't play computer games so much. He should do his homework.
3. Mr. Nam should give up smoking.