唱歌 (Sing a song) 唱歌歌 (Sing A Song) 唱歌歌(Sing a song) 唱首歌--Sing a song sing a song 唱歌歌Sing A Song 唱首歌——唱首歌sing a song 11.唱首歌 = Sing a song sing N song Sing a song