Употребите нужное по смыслу местоимение1. I bought this pen. It is

Употребите необходимое по смыслу местоимение
1.
I bought this pen. It is pen.
2.
My friend has a guitar. is a musician.
3.
She invited Johnny to party.
4.
Children should obey parents.
5.
We hope that life will be happy.
6.
He was teacher, but I dont remember .
7.
Do read the article? Yes, I read.