how happy they are to see the film .to see the film 在句中做什么成分

how happy they are playing 改错, How happy they are. 什么意思? How _____ (happy) they are relaxing! How () happy they are!How （） they are！用happy的适当形式填空。 They are singing----------.How ------they look.happy.happily How can they be happy i____ they are not free? 是how happy they are 还是 what happy they are 为什么 Look at these c_____ ,how happy they are.填什么? how happy they are playing!如题,改错 how happy we are H( ) happy they are After a long walk ,they ____their flying kites How happy they are now 初二英语试题首字母填空题（T?) they are poor ,they are very happy. How happy the children are!同意句 —— —— —— they are. how happy the students are!改为同义句__________students they are! how happy the children are的同义句( )( )( )they are.按照这个改 They are happy.They are d_____ Look at the photo of the Smiths.----happy they are!A.How B.How a C.What a D.How