You're both A very silly. 

Sasha doesn't like team sports at all. 

I have been writing this for hours and it's still not right.

It's the first time when that I'm flying alone.

Phil looks not doesn't look old enough to drive a car. 

Clair is having getting a haircut at the moment.

My homework)

You've BEEN looking at that timetable for the last ten minutes.
I DO wish you'd be quiet!
You're both A very silly.
THERE is no point, at all, in blaming each other.
You ARE quite.  quiet.
I AM sorry.
This is the worst holiday we've EVER been on.
Sasha DON'T DOESN'T LIKE team sports at all.
I HAVE BEEN WRITTING this (for) hours and it's still not right.
It's the first time WHEN I'M FLYING alone.
Poul DOES ENJOY surprises, just not on his birthday.
Phil does not looks not old enough to drive a car.
I'm thinking (I would use - I think) I'm going to buy the new Racetrack CD.
Clair is having/getting a haircut at the moment.
Help me, please, inspect it)