二、单项选择（共15小题；每题1分，计15分）
在下列各题A、B、C、D四个选项中选择一个能填入题干空白处的答案。
21. How much ___________do we need to make fruit salad(沙拉)?
A. carrots B. watermelon C. lemons D. tomatoes
22. It__________ me 2 hours to buy a birthday present for Amy. The present__________19 yuan.
A .takes, spends B. costs, takes C. spends, costs D. takes, costs
