II 单项填空(共15小题；每小题1分，满分15分)
21. – Why don’t you join me in the computer games?
-- _____________.
A. Sure, go ahead B. It’s a pleasure C. That’s all right D. OK, coming
22. China issued new plan which calls for immediate action to deal with
country worsening air pollution.
A. the ; a B. a ; the C. a ; a D. a ; /
23. Thanks to his open-minded parents and schoolmaster, he was lucky enough to grow up the positive impact of sports.
A. exposed to B. to expose to
C. being expose to D. having exposed to
