1. Beg pardon, but have you seen my ball-pen?
2. May I borrow your ballpen? Certainly!
3. He rooted about in all his drawers and found the lost ball-pen at last.
4. Mechanical Pencil, Refill Leads , Ballpen Wooden Pencil, Eraser, Stationery PlasticPlastic Products.
5. These are my ballpen.