We are thisty.
WE'RE
He's got a new saxophone.
HE HAS
He is not going to the concert.
ISN'T (or HE'S NOT)
She does not want to learn the trombone.
DOESN'T
It's tired.
IT IS
I do not like the violin.
DON'T
I've got three sisters.
I HAVE
She is 8.
SHE'S
Fred's got a new triangle.
FRED HAS
John's playing the drums.
JOHN IS
I have not seen the trumpet.
HAVEN'T
I am hungry
I'M