what have you got in your school bag во множественном чесле

1. In my school bag I have a lot of pens (ручек).2. In my school bag I have a lot of pencils (карандашей).3. In my school bag I have a lot of books (книг).4. In my school bag I have a lot of text-books (учебников).5. In my school bag I have a lot of rubbers (ластиков).