“art room” 前面是用“a”还是“an”?

“art room” 前面是用“a”还是“an”? Do you have a new art room? works of art的复数形式works of art是单数还是复数?有没有a works of art还是a work of art? art room前应加IN还是AT还是ON呀?急 It's________to have an art room,a music room and tow computer rooms 怎么填啊文章里的句子是we also have an art room,a music room and tow computer rooms.that's wmnderful. 椭圆的长半轴是什么啊?是2a还是aRT 是What a clean room?还是 How clean room E-mail前面是用a还是an 还是不可数? There is an art room and a music room.（改为同义句） ___There is an art room and a music room.（改为同义句）___ ___ ___ an art room and a music room. Do you have a art room 的答语是什么 A.She _in an art room.B.She _ picture. art room的英文单词 frightened 前面是用a few 还是a little?. There is an art room and a music room at my school（同义句）----- ----- ------ an art room and a music room There is an art room and a music room at my school.改为同义句________ _________ __________ an art room and a music room. Thanks for () for me A make a roomB C DB making roomC make roomsDmaking an room是用a room还是an room 英语翻译是China ceramic art 还是Chinese ceramic art do you have an art lesson与How many还是How ofen合用1、___do you have an art lesson?-Twice a month.A How long B How many C How ofen2、___not good to talk loudly in the reading room?A It‘s B You’re C There‘s3、如 snowy snow snows的用