The book On music is very useful是什么意思

The book On music is very useful是什么意思 I think the book on light music is worth (reading,to read ,to be read) The music room is on (one)floor. 关于which的英语语法popular music is what teenagers like ,is后面可以加which吗 The book iswhich on the desk和 the book which is on the desk两句语法都对吗? _____ ____ the book? The book is on the table. the english book is on the shelfthe book on the shelf is an english book The Music room is on (the third floor)提问 ______ ______ is the Music room on? the book is on the desk. The book is on the desk. The book is on the swing is there a book on the desk? Tommy’s book is on the chair. is your book on the desk (陈述句) a book on the table 没有is the music room is on the the third His book is on the desk.(划线提问His book I like the book better .the book is on the left.I like the book ( ) ( )( ) better is.it.book.on.the.Chair.还是is.the.Book.On the chair对