He is listening to the music he is washing clothes.　　A. afterB. beforeC. thatD. while

问题补充：

He is listening to the music he is washing clothes.

A. after

B. before

C. that

D. while

答案：

A. after

B. before

C. that

(答案→)D. while

解析：考查while引导的从句。由于前后两句都用了进行时态，故选D。