I have a pen.
Tom gave me a pen.
I had my pen stolen.
Please write with a pen.
Do you have a pen on you?
I have to look for my pen.
Would you lend me your pen?
Write with a ballpoint pen.
I need to search for my pen.
I bought a pen, but I lost it.
He was holding a pen in his hand.
I bought a pen for your birthday present.