第一节单项填空(共15小题；每小题1分，满分15分)
21．The 2008 Olympic Games Came to ________end last night with _______colorful closing ceremony at the National Stadium．
A．不填；a B．an；不填 C．an；a D the：the
22．一 Excuse me，mother，but I want to go out for an outing with my classmates this week—end．______________
A．Congratulations B．Good luck C．My pleasure D．Have fun
