somebody check to my sentences

He wants to obtain a new a  Certificate
I am seeing see a beatifull flow.
The road is very narrow.
My cat is gentle with people.
I have breded a bird.
I am holding the crust of bread.

Somebody check to my sentences:

He wants to obtain a new certificate.
I am seeing a beatiful flow.
The road is very narrow.
My cat is gentle with people.
I have bred a bird.
I am holding a crust of bread.

:)