is the girl are playing the piano?这句话为什么要用are playing谢谢!

陈述句变感叹句lucy is a very clever girl (what) lily is a very beautiful girl (how ) the student are play basketball happily (how)the book are very new (what)the story is very interesting There is a girl ____ the guitar over there(play) look!the girl (play/is playing )with a cat. 完成句子 1.What is she doing?She_____.( dance ) 2.What are they doing?They_____.( swim )3.What is the girl doing?She______.( cook )4.What are they doing?They____volleyball.( play )5.What is the girl doing?She_____.( write ) Who is the boy and the girl 还是Who are the boy and the girl He is _________ the girl can play the piano so well.A.surpriseB.surprisesC.surprisingD.surprised ()the girl is play the piano A.how wellBwhat good C.howD.what Can you play w____ the little girCan you play w____ the little girl?She is very lonely. you are the girl the boy and girl (用is是are )very cutethe boy and the girl (is 还是are ) very cute LooK at the girl.__(she) name is Amy. I often play with __(she).急! is this the girl______ you are to marry和is this girl ______you are to marry is the girl are playing the piano?这句话为什么要用are playing谢谢! The girl is Japanse的复数是The girls are Japanse还是These girls are Japanse The girl is where is the girl Where is the girl Is the girl happy?