二．单项选择（共15题，每小题1分）
21. In the early morning all of us stood at the top of the mountain ___________ east of the city, watching __________burning sun rising.
A. /; a B. the; a C. the; the D. /; /
22. --- Can I help you?
---I’d like to buy a present for my father’s birthday, _____ at a proper price but of great use.
A. it B. which C. one D. the one
