III.
16. D ( clubs ⇒ club )
17. D ( of ⇒ for )
18. B seen
19. A ( go ⇒ goes )
20. C first
IV.
21. A. Where are you working now?
22. A. How far have you waited for her?
23. A. What is she doing when you saw her?
24. D. When the students heard bell, the left.
25. C. How many student are there in your class?
$@Huin$