_ the good news they began to sing and dance.A.At B.Heard c.On D._英语解答

_ the good news they began to sing and dance.A.At B.Heard c.On D.To hear 理由是什么?

人气：250 ℃　时间：2019-09-03 10:16:55

解答

选at
是介词at的用法,有一听到.的意思.
一听到这个好消息,他们开始唱歌跳舞