第一节：单项填空（共15小题，每小题1分，满分15分）
请认真阅读下面各题，从题中所给的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. After visiting the city, the foreigners were given ______ second chance to take photos along ______ Changjiang River.
A. the; the B. the; / C. a; the D. a; /
22. Tony stood up and accepted the prize, ______ and happy.
A. surprising B. surprised C. being surprising D. to be surprised
