This is a ( ) useful advice A a B an C the D 应选哪一个急死了

This is () useful story book.. This is quite a useful book .解释一下quite为什么放在 a前面,useful是什么意思,为什么不定冠词不使用an? this is useful advice to students of english应该是a piece of useful advice 难道 a piece of 可以省略 This is a useful dictionary. So it is,and it is ______unusual one. 添什么,为什么 This is ______ useful book. A. a B. an C. the D/This is ______ useful book.A. a B. an C. the D/要解释 This is that we all think it's very important.A such useful information B so useful information This is useful work改为否定句 This is useful work改为一般疑问句 A horse is ( ) useful animal.A.an B.a C.the D.this This is a ( ) useful advice A a B an C the D 应选哪一个急死了 this is ___to students of English A.a useful advice B.useful advice C.one of useful advices D.a pithis is ___to students of EnglishA.a useful advice B.useful adviceC.one of useful advices D.a piece of useful advice答案上说D,我想问问为什么 This is ___ useful dictionary .选择：A.an B.a C.the D./ _______horse is a useful animal . This is _____ that all of us believe it’s very important.(2005年广州) A.such useful informationB.so useful an information C.so useful information D.such a useful information 给点建议 It is a useful science book Jenny looks beautiful in this red skirt 改为感叹句 This is such a useful information that all of us believe it's very important. 帮忙翻译一句话A lot of useful information is saved in this computer. not read this magazine?This is ___ some useful information is available求详细解Why not read this magazine?This is ___ some useful information is available A.what B.how C.whereD.that