When you finish ,put the book back______it was.A.where B at

When you finish ,put the book back______it was.A.where B at Where have you put my book?I()(A:put B:have put C:puts D:wil when can you finish -----(write) the book The book is(. )you left it. A.what. B.how.C.when. D.where put back the book---it was when you leave the reading room you shuld have put the book where you found it You should have put the book where you found it. when you finish reading the book,you have____ better underst please ---the book ---the library when you finish it after the war,a new school buliding was put up where at ther You should have put the book where youfound it. Here is where you put the book.这句话对吗?