一、单项选择（满分15分，每小题1分）
16. Susan is my good friend and she always helps me _______. my Math.
A. in B. on C. for D. with
17. There is _______"h" and _______"u" in the word "hour".
A. an; a B. an; an C. a; a D. a; an
18. ---Would you like _______milk?
---No, _______.
A. any; I wouldn't B. some, thanks
C. any; thanks D. some; I don't
