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. The foreigners from _______ United States paid _______ visit to the Bird Nest Stadium last week.
A. /; the B. /; a C. the; a D. the; /
22. MR Jackson, _______ car I borrowed for his journey, is a famous writer.
A. which B. of whose C. whose D. of which
