How happy the family it is!对吗,还是在末尾用they are How happy the f

How () happy they are! How happy the kids are!They have nothing _______. how happy they are to see the film .to see the film 在句中做什么成分 How happy the people are!=____ happy ___ they are how happy they are playing! 是how happy they are 还是 what happy they are 为什么 the cat is very happy用what,how造句 Look at the photo of the Smiths.----happy they are!A.How B.H Look at the photo of the Smiths.----happy they are!A.How B.W how happy the students are!改为同义句__________students they are! all the family are happy when they see t How happy the boy (look)!