4. It is a camping shop which has a lot of good equipment.
5. The storm, which started at 2 o'clock this morning, caused a lot of damage.
6. Nick, whom I've known for a long time, is my classmate.
7. Some people dream of a job which they can do without technology.
8. My stereo, which worked yesterday, doesn't work today.
9. The man, whom you were talking to, is a computer expert.
10. Some documents, which were stolen from a car, have been founded.
II,
1. If I learned ten new items of vocabulary a day, I could speak English with foreigner easily.
2. If she went to an English speaking club everyweek, she would speak English fluently now.
3. If I were you, I would spend more time listening to the radio, watching TV and practising speaking English with my friends to improve my English.
4. If my vocabulary weren't poor, I wouldn't be worried about the English exam.
5. If Jenny went abroad at every summer time, she would be very good at English.
6. If I had a dictionary, I could look the word up.
7. If the wind weren't blowing hard, I would take the boat out for a ride.
8. If Nick had a map, he could find the way.
9. If I knew enough about machine, I could mend it myself.
10. If the bus weren't so crowded, I would ride it to work every morning.
III,
1. If I could swim, I would go scuba diving with Jack.
2. If we had enough money, we would order a pizza.
3. If we stayed in the same hotel, we coud share a room.
4. If I were you, I would call Antony righ now.
5. If I didn't have to help my dad with something, I could come.
6. If I went to bed as late as you, I wouldn't be able to get up early in the morning.
7. If I lived alone, I would get lonely.
8. If John didn't get such a lot of homework, he would play football tonight.