this is a piece of beautiful music ( )this is a piece of beautiful music ( ) a.to listen b.listen c.to listen to d.listening to 怎的翻译?选什么?

this is a piece of beautiful music ( )this is a piece of beautiful music ( ) a.to listen b.listen c.to listen to d.listening to 怎的翻译?选什么?
this is a piece of beautiful music ( )
this is a piece of beautiful music ( ) a.to listen b.listen c.to listen to d.listening to 怎的翻译?选什么?

this is a piece of beautiful music ( )this is a piece of beautiful music ( ) a.to listen b.listen c.to listen to d.listening to 怎的翻译?选什么?
C
这是一首适合听的音乐.
主语是音乐,用不定式