They are singing----------.How ------they look.happy.happily

They are singing----------.How ------they look.happy.happily how happy they look 还是how happily they look How happily they look at the party! How () happy they are! They are playing together ----------(happy/happily) The gilrs are singing and dancing.They look ——（happy）.用happy Look at these c_____ ,how happy they are. How ------they are是happy还是happily为什么 什么时候用形容词,什么时候用副词.谢谢 How lovely!They are many birds.They are( )happily.. they always look 后为什么接happy不接happily how happy they are playing! They all looked_______(happy/happily)