They don't have fun---------the piano.\A.playing B.play C.to play D.for playing
问题描述：
They don't have fun---------the piano.\A.playing B.play C.to play D.for playing
答
选A playing
They don't have fun playing the piano.
他们弹钢琴弹得不开心.
have fun doing sth 做某事开心
not have fun doing sth 做某事不开心