第二部分：英语知识运用（共两节，满分45分）
第一节 单项填空（共15小题；每小题1分，满分15分）
从 A 、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑。
21. —How often do you go to see a movie?
—___________, but usually once a month.
A. It’s a secret B. Have no idea C. As usual D. It depends
22. —Did he come out ___________ first this time?
—Yes. He’s always the best in the examinations.
A. the B. / C. an D. a
23. —Why are you late again?
—Sorry, I got stuck in the traffic jam. Some roads are blocked because they are __ ___construction.
A. under B. during C. with D. at
