"To be" - short forms

Which is the short form?

• Sue is my friend.

• Sue's my friend.

Which is the short form?

• I am not very tall.

• I'm not very tall.

• I isn't very tall.

Which is the short form.

• He's isn't playing football.

• He is not playing football.

• He isn't playing football.

Which is the short form?

• We are not in Madrid.

• Wen't in Madrid.

• We aren't in Madrid.

Which is the short form?

• They aren't coming to my house.

• They isn't coming to my house.

• They arn't coming to my house.

I.... your friend.

He ..... a lizard. (negative)

We..... going to your party.

You .... going to have an exam. (negative)