The young man plays violin very well but he plays basketball badly.A. the; theB. a; aC. a

问题补充：

The young man plays violin very well, but he plays basketball badly.

A. the; the

B. a; a

C. a; the

D. the;不填

答案：

A. the; the

B. a; a

C. a; the

(答案→)D. the;不填

解析：考查冠词的用法。与球类有关的不加the，如：play football；与乐器有关的一律加the。本句是“这位年轻人弹钢琴弹得不错，但他打篮球打得不好。”，故选D。