问题补充：
-Can you tell me why you learn English so well?
-It’s very simple. you work, grades you will get.
A. The harder;the best
B. The bard;the better
C. Harder;better
D. The harder;the better
答案：
A. The harder;the best
B. The bard;the better
C. Harder;better
(答案→)D. The harder;the better
解析：考查形容词比较级的用法。“the+比较级Ａ…，the+比较级Ｂ…”表示“越…，越…”。
