(what/what an/how) expensive this dress is 那个对

(what/what an/how) expensive this dress is 那个对 What material is this dress made what a beautiful dress she is wearing用how改写 what colour is your dress?和 what is your dress colour?哪个是对的? what is your o____for this dress空位该填什么 What much is this dress?怎么错了? how ,how a ,what ,what a _____ pretty your dress is (用哪一个 为什 this is what i think 还是this is how i think.哪个才是对的? much how is dress this This is _____only expensive dress I've got this dress is _____that.( twice,as...as,expensive) What colour is her dress?