一、单项选择（共15小题；共15分）
1. The best moment for the football star was he scored the winning goal.
A. where B. when C. how D. why
2. To improve the quality of our products, we asked for suggestions had used the products.
A. whoever B. who C. whichever D. which
3. --- Oh, I want to give up now.
--- Come on! doesn't kill you makes you stronger.
A. Whichever B. Whatever C. Whoever D. Whenever
