2. Yesterday I (go) ________________to the centre and (see) ________________ an exhibition.

3. Are you interested in (do)________________ community service?

4. We volunteer (help)____________________  the elderly in a nursing home.

5. John is a stamp (collect) _____________________. He has a lot of rare and valuable stamps.  

6. Junk food is (health) ________________________, so we shouldn’t eat too much junk food.

7. My home town (change)__________________________  a lot in the recent years.

8. She covered the cake with a (mix)______________ of sugar and whites of eggs.

9. Lan doesn’t sing as (good)__________as Nga. Nga is the best singer in the class.

10. They (collect)______________stamps when they were in primary school.