19. I must try my ___________ to help others. (well)

18. Every morning we can find some students _____on the playground. (run)

17. I’m tired. I can’t walk any _________. (far)

16. The 9· 11 Accident _______ in America on September 11, 2001. (happen)

15. --Thank you. I’m very ________ with your work. -- It’s a ________. (please)

14. Would you like to come _________ with me? (swim)

13. Look! Some _______ of blood are _______ down from his finger. (drop)

12. The girl is always _________ about her missing cat. (worry)

11. He wants to be a doctor instead of __________ a teacher. (be)

10. His father’s ___________ made him very sad. (die)