______ useful book it is!A．What an B．How a C．What a D．What

It is ____ useful book.I borrowed it yesterday. 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 ( )useful book a/an “The book ______ (提供)me a lot of useful knowledge.”这道填空题怎么答? “This is ______ most useful reference book,” a teacher from ______ European country told us in cla a I'd like to ______ the book. I'd like to ______ the book. （ ）useful book it is what a useful book it This is () useful story book.. an useful book还是a usefull book? This book is useful to me,so I _____ 20 yuan on it yesterday. This is _most useful reference book I have on this subject. Thats( a) useful book .I have read it already.为什么不用the This book gives us some useful(i )on how to use computer填空 ______ useful book it is!A．What an B．How a C．What a D．What Maybe an interesting book isn't always ______ useful one.A.a B.an C.the D/ 1 I find it useful _____(learn) English well.2 This desk feels ______(smoothly).