Leonardo, Donatello and others in “Unfinished Business”

Donnie, you know how much this means to Sensei.

Leo, I'm trying as hard as I can.

Well try harder.

Try harder!? I always have to find the solution! You're leader, Leo! You find the answer! Or what about Raph!?

I got the answer for you- Karai's a lost cause!

Don't say that, dude!