2) 1. Doing things for other people is life's biggest pleasure.

2. Anyone wishing to take the exam must register in June.

3. Most of the found dead animals after the earthquake were domestic pets.

4. Feeling sleepy, Luisa went to bed.

5. It is compulsory to wear a bathing cap while swimming.

6. He finally wanted some peace and quiet after having been famous for years.

7. They decided to set up their own exhibition, being banned from exhibiting their paintings in the national one.

8. Waking up early as usual, David looked out of the window.

3) 1. ruining

2. finishing

3. stolen

4. saying

5. feeling

6. borrowed

7. knowing

8. explaining

9. taking

10. studying