二、 单项填空(共15小题；每小题1分，满分15分)
21. Kuming is _______ most attractive coastal city and how I wish I would go there for _______third time.
A. a; a B. the; a C. the; the D. a; the
22. —Can I buy a Friday’s plane ticket for London?
—I’m sorry, but there are no tickets_________ for Friday’s flight
A. possible B. present C. acceptable D. available
23．There is no ________to argue that meaningless question. It's a waste of time.
A．possibility B．time C．doubt D．need
24. Edward, you play so well. But I you played the piano.
A. didn't know B. hadn't known C. don't know D. haven't known
25．________，and we'll get everything ready for the taking off.
A．Have one more hour B．One more hour
C．Given one more hour D．If I have one hour more
