This is a book,which I dare say,is unequaled as far as translation practice is concerned.这句话的句子成分是怎样的?尤其是 as far as translation practice is concerned

this is a book _____ which I spend 5 yuan. This is a book Is there anything__worth reading in this book?A.which is B.which C.that is D.that this is a book which i bought yesterday为什么不是to which,而是which详细解释下 谢了 Is this a book? Yes,this is. This is s book.(a book提问) This is a book答语 This is the book --- I got from Sally last week.A which B where This is the best book that there is on the subject可以解释一下这个句子吗,新原题是This is the best book------- on the subject.A.which there is B.that there is C.which is D.what is this is the book which i bought yesterday Which is ______(boring),this book or that one? This is the book which I talked about yeasterday , Is this the book for which you are looking 改错 which level is this book,什么意思啊? This is the book which(that) was written by our teacher.为什么用 the book 读起来很不舒服我觉得用 a book好点吧 This is a book.对a book进行提问 Is this factory ( ) we visited last year.A.where B.in which C.the one D.at whichThis is the book I bought yesterday,( ) I spent 8 yuan.A.for which B.in which C.at which D.on which This is the book (which is) lost.为什么which可省略