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，并在答题卡上将该选项的标号涂黑。
21．I wanted to catch early train, but couldn’t get ride to the station.
A．an；the B．/；the C．an；/ D．the；a
22．Chuck Swindoll once said, “life is 10% happens to us and 90% we respond to it.”
A．who; why B．what; how C．which; when D．that; that
