C

() 8. What would volunteers do during the event?
A. Tidy up their rooms.
B. Visit their neighbors.
C. Clean up rubbish.
D. Have parties.
() 9. How long did volunteers need to work on that day?
A. Two hours.
B. Three hours.
C. Four hours.
D. Five hours.
() 10. To take part in the event, what did 15-year-old John have to do?
A. To register on September 23.
B. To register four times.
C. To have a parent with him.
D. To get his parent’s agreement.
() 11. Volunteers had to bring the following things EXCEPT .

8. C
9. B
10. D
11. A