He tries to spend as much time as he can Chinese well. A to study B studies C. studying

问题补充：

He tries to spend as much time as he can Chinese well.

A to study B studies C. studying D. study

答案：

解析：考查短语：spend time in doing sth,句意：他试着花费尽可能多的时间把汉语学好。故选C。