be preparing for的用法They might be preparing for it为什么不用be prepared for或prepare for

be preparing for的用法They might be preparing for it为什么不用be prepared for或prepare for be preparing for和be prepared for的区别 be good for 的用法? be ready for和prepareIsn't it time you got down to ——supperA,being ready for B.preparing横线上为什么填preparing,怎么不可以是being ready for . preparing for a travel 的英语作文 can‘t be 和mustn’t be的用法 be good for加not的用法 be famous for的用法,造句 be busy for的意思和用法 be late for的用法如上 be famous for的用法造句 be necessary for的用法1.I can't decide which to buy.这里可不可以用what to 2.be necessary for和be necessary to的区别? be late for用法 be ready for 用法 Jenny didn't have time togo to concert last night because she was busy_____ for her examination.A:preparing B:to be preparedC:to prepare D:being prepared can't be用法 Mother was busy ______ supper and she asked the kids to ______.Mother was busy ______ supper and she askedthe kids to ______.A.preparing for,get prepared B.preparing ,get preparedC.preparing for,be prepared D.preparing ,be prepared Linda can't attend the party( )at Tom's house at present bacause she is preparing a speech for the party( )at Marie's house tomorrow.A.being held;to be heldB.to be held;heldC.held;being heldD.to be held;to be held请给出相应的语法解析,拒绝