题目内容：

(2017·凉山)

一Last night I went to a concert of Chinese folk music.  Erquan Yingyue was so  sad but beautiful that I sensed a strong sadness and pain under the beauty.

一So it was.  The musician who played it last night      to play the erhu since he

     very young.

A. learned; was    B. has learned; am

C. has learned; was    D. learned; has been