He's Concentrating like mad.
Concentrating on you too much.
What should I be Concentrating on?
You're certainly Concentrating there.
Lyra, you're still not Concentrating.
Gabriel, why are you not Concentrating?
I think you're not Concentrating enough.
Are you having a hard time Concentrating?
You weren't Concentrating on your acting.
She was Concentrating on environmental law.
That's the face of a man who's Concentrating.
I thought you were Concentrating on basketball!
I think it's me who is not Concentrating enough.
Only Hammond was Concentrating on the job in hand.
Now, were you Concentrating hard? Let's have a look.
It doesn't really matter if you're not Concentrating.
We should be Concentrating on what we're gonna do next.
So, I spent the next three years Concentrating on them.
You said trees can kill you if you're not Concentrating.
And I've been tired and I'm having trouble Concentrating.
She's just Concentrating on her studies because it's finals.
You're just not Concentrating quite as hard as you should be.
We've been Concentrating on the tough, now let's see what puts the mud in mudder.
It's amazing how much thinking and Concentrating you have to do to drive economically.