I. Circle best option A, B, C, or D to complete the sentences below.

6. Some people are used to__________ in crowed buses, and don't mind it at all

7. It’s no use__________ him to stop smoking.  

8. We often organize concerts to ________ funds for poor children.   

9. __________ this invention, we can learn more about the undersea world.

10. My parents like fish, but__________.

11. My sister has a.............summer vacation.             

12. Marry and I are looking forward__________ you.         

13. They ________ coupons for free chicken noodle soup for the poor since last November.

14. My funny story made the whole class__________.

15. She needed__________ these postcards to her friends

16. We will go on holiday with some friends of __________.

17. A volunteer always helps other people willingly and __________ payment.

18. You can volunteer by __________ children from poor families in your community.

19. We've decided to clean up the lake __________ it is full of rubbish.

20. __________ the elderly people in the nursing home so far, Julia?