二：单项填空（共20小题；每小题0.5分，满分10分）
从A、B、C、D四个选项中，选出可双填入空白处的最佳选项，并在答题纸上将该选项标号涂黑。
21. During _____ president’s 3-day stay in Beijing, he was shown around ____ Tian-an Men Square, the Great Wall and other popular tourist destinations.
A．/ ,the B．the, / C．/ ,/ D．the, the
22. Though having lived abroad for years, many Chinese still _____ the traditional customs.
A. perform B. possess C. observe D. support
23. --- Can I really get a mountain bicycle as a reward if I win the race?
--- Absolutely! .
A．It all depends B．I mean it C．You’ve got me D．So will you
24. Some abstract modern paintings were ______ my understanding; I simply couldn’t figure out what the painters really wanted to tell us.
A. within B. behind C. around D. beyond
25. ---I hope you will be ready to leave on time.
---Don’t worry. I’ll be ready by the time the taxi _______.
