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. It is great fun watching stand-up comedian standing in
front of the stage telling jokes.
A. a; a; / B. /; a; the C. the; /; / D. /; /; the
22. in a traffic jam for a long time is a rather boring and even annoying thing in a big
city.
A. Caught B. Being caught C. Having caught D. Catching
