They look _(happy)when they sing a happy song(用所给单词的真确形式填空,并翻译全句）

They look _(happy)when they sing a happy song(用所给单词的真确形式填空,并翻译全句） how happy they look 还是how happily they look How happy they look!=What... look!they are smiling___(happy） They _ very happy A look at B look C are looking D looking 为什么要选B 而不选C 呢 They are look so happy.They look so happy.这两句哪句正确?为什么? They are singing----------.How ------they look.happy.happily A:Look at the boys!Are they going canping?B:_,_ _.They are_ _. her look _ 表明she lives a happy life They () very happy. A. look B.look at C. look like D. is looking they always look 后为什么接happy不接happily Look!The boys are__.They are playing__there (happy) look!they are playing____（happy）under the tree. Look at these c_____ ,how happy they are.填什么? Look!The boys are__.They are playing__there (happy) all of them look very happy.为什么不用they. The students look _ when they wear school uniform(order) look,there ____a nice rainbow___the sky.the chlidren_____very happy.look they are__football.急要