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
21. I went to Sanya with my parents last month. Travelling by ship is quite exciting experience.
A. the; an B. /; an C. /; the D. a; an
22. She felt of having done that and tears ran down her cheeks.
A. Shame B. ashamed C. sorry D. disappointed
