初二英语3小题,不会,求解答,谢谢

初二英语3小题,不会,求解答,谢谢
1.---have you heard the song stay here forever?
---yes,it sounds ___.
a.well b.loudly c.sweet d.beautifuly
2.look!sonia looks worried.there must be ___ wrong with her.
a.nothing b.something c.anything d.everything
3.他们在进行舞蹈比赛
they are having a ___ ____.