一、 单项填空（共10小题；每小题2分，满分20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。
1. After you learn the text –English and its history. You can begin to see English has such strange rules!.
A. why B. that C. which D. what
2. I want to know or not the fog will clear up this afternoon.
A. if B. whether C. that D. which
3. a man came to show her the way made her happy.
A. what B. where C. which D. that
4. The doctor _____ operated on his father is very well-known.
A. whom B. who C. whose D. as
5. Thank you so much for to my aid.
