2.

1. This is the bank which was robbed yesterday.

2. A boy whose sister is in my class was in the bank at that time.

3. The man who robbed the bank had two pistols.

4. He wore a mask which made him look like Mickey Mouse.

5. He came with a friend who waited outside in the car.

6. The woman who gave him the money was young.

7. The bag which contained the money was yellow.

8. The people who were in the bank were very frightened.

9. A man whose mobile was ringing did not know what to do.

10. A woman whose daughter was crying tried to calm her.

3.

1. A tiger is an animal which is very strong 

2. A novelist is a person who writes novels

3. A bottle opener is a device which opens bottles

4. The girl whose mother writes poems speak French

5. A detectibe is someone who discovers the truth about crimes

4.

1. I think that my boss is the person whom I admire most.
2. We are taking the train that's leaves at 6.00.
3. Have you seen the book that I felt her on the desk?
4. My radio, which isn't very old, has suddenly stopped working. (nope)
5. Last week I ran into an old friend whom I hadn't seen for ages.
6. The couple who met me at the station took me out to dinner.
7. The bag in which the robbers put the money was found later. (nope)
8. I really like the tea which you made me this morning.