Rút gọn mệnh đề quan hệ sử dụng V-ing hoặc V-P2 hoặc To-V1

Rút gọn mệnh đề quan hệ sử dụng V-ing hoặc V-P2 hoặc To-V
1. He was the second man who was saved in the fire
2. I haven't got anything that I could open a bottle of wine with
3. The Queen Elizabeth is the largest ship which has been built on the island
4. The people who was waiting for the bus in the rain are getting wet.
5. He was the first man who left the burning building
6. The couple who live in the house next door are both college professors
7. Tje students who did not come to the class yesterday explain their absence to the teacher
8. Did you get the message which concerned the special meeting?
9. Lan is the second student who entered the classroom this morning
10. The psychologists who study the nature of sleep have made important discoveries.