1. Which
2. Who
3. Which
4. Where
5. Where
6. Which
7. Who
8. Which
9. Where
10. Who
11. Who
12. Which
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14. Whose
15. Who
II.
1. We stayed in a hotel which was very expsensive.
2. The man whose son we play with every day is an architect.
3. She's riding on the elephant that was carried from India.
4. Trinh Cong Son composed songs which are greatly kiked by millions of Vietnamese people.
5. On New Year's Day, children like wearing clothes which are new and comfortable.
6. Susan is the girl who is good at learning foreign languages.
7. Champagne is a French drink which is drunk at a New Year's Eva party.
8. I like autumn when leaves become red and fall.
9. The suitcase which his son cannot carry upstairs is too heavy.
10. We'll take you to the seaside where you can enjoy pure air.