第一节语法和词汇知识（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. —__________ Mr. White was appointed director of our department.
—Then we have two Whites now including ___________ Mr. White, the doorkeeper.
A. The; a B. A; the C. A; 不填 D. 不填; a
22. —What’s that? It smells great!
—It’s just milk tea. Would you like __________?
A. this B. one C. it D. some
