The watch was very good, and he 20 percent down for it.
A. a good one
B. a Better one
C. the Best one
D. a Best one
网友回答
A. a good one
(答案→)B. a Better one
C. the Best one
D. a Best one
解析：考查比较级的用法。不定冠词+比较级，表示泛指，意为“一个更（好）......的......”。故选B。
【考点定位】不定冠词+比较级，泛指“一个更......”。