Lin Dan has become the best badminton player he wanted to be.A. whoB. whichC. whatD. that

问题补充：

Lin Dan has become the best badminton player, he wanted to be.

A. who

B. which

C. what

D. that

答案：

A. who

(答案→)B. which

C. what

D. that

解析：考查定语从句：句意：林丹成为最好的羽毛球运动员，这是他想做的。这是非限制性定语从句，不能用that引导，因为这里先行词是the best badminton player,是职业，不是人，所以不用who，用which引导。选B。