I have some magazines(否定句)

I have some bread 改为否定句 I have some apples 变为否定句 I have some cakes.改为否定句 I have some bags 改否定句 There are some magazines on the desk.(改为否定句) The are some magazines on the desk变为否定句? I think you have some mlik.改否定句 I have some flour.（改为否定句） I also have some comic books.改为否定句 I have some books in my backpack.变否定句 I have got some pens(改成否定句) I have some friends here(改否定句)