mary produced 60 books,some fifty of _which_were original no

Do you have some books?Yes,we have some ()of books in No.7 M mary has some books变否定句 In her______（fifty）,she wrote a lot of books. In her ___(fifty),she woter a lot of books. Mary does not have any books（改成肯定句） Mary has some books. Mary bought me some books yeasterday.改为被动语态 here.some books for you,Mary空白处应填什么 Ben and Mary( ) some books. 括号应该填什么 对划线部分提问 I can see fifty some books on the table 1,she has____.A no a book B no books C no some books Some of them like 什么books We bought some books of _____