一、单项选择 (共15小题；每小题l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最佳答案。
1. --- I think eating more vegetables is good _______ our health.
--- Yes, I agree _______ you.
A. at, to B. to, to C. for, with D. for, to
2. --- Do you know the boy________ is sitting next to Peter?
--- Yes. He is Peter’s friend. They are celebrating his ________ birthday.
A. who; ninth B. that; nineth C. /; nineth D. which; ninth
3. --- Did you have a good time at Laura’s birthday party?
--- Yes, indeed. It’s several years ________ I enjoyed myself so much.
A. when B. before C. since D. that
