Điền who, whom, which, that, whose
1. The man to____ we spoke is a doctor. 
2. It was the kind of accident for___ nobody was really to blame. 
3. He didn't pass the college-entrance examination, ____ disappointed him. 
4. she won the first prize,  ___ surprised everybody
5. the school ____ we visited last week is 100 years old. 
6. they show me the hospital ___ building had been destroyed by US bombings 
7. marie, ____ I met at the party, called me last night. 
8. I remember alice, ___ rode the bus to school with. 
9. do you remember mr.smith, ___ taught us English? 
10. The strike at the car factory, ___ lasted 2 days, in now over 
11. we made a trip to Ha Long, ___ is a beautiful spot in VN. 
12. Oxford Univesity, ___ is one of the oldest in the world, has many different colleges.