13. We must ____ the project within 10 days.
A. completing
B. complete
C. to complete
D. completed
正确答案：
14. His oral English is _____ than his brother's.
A. well
B. good
C. better
D. fine
正确答案：
15. His illness is _____ than before.
A. much serious
B. seriouser
C. more serious
D. most serious
正确答案：
16. They all come ____ with influenza.
A. down
B. up
C. in
D. out
正确答案：
17. The school requests every student to ______ the sports meeting.
A. take part
B. take in
C. take part in
D. part in
正确答案：