第二部分：英语知识运用（共两节，满分35分）
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，并在答题卡上将该项涂黑。
21. I knew ______ John Lennon, but not ______ famous one.
A. /, a B. a, the
C. /, the D. the, a
22. We went up to the roof, ______ we had a good view of the lake.
A. where B. from where
C. from which D. at which
