Her mother is at the root of all the girls problems.

But he really can't get at the root of the problem.

I'm not sure what was at the root of the problem.

The live performance is at the very root of the Texas country scene.

At the root of this problem, is the education system.

Still, numbers were thought to be at the root of the problem five years ago.

But at the root of it all is to have books in many hands.

And that seems to be at the root of the problem.

But at the root of them all, there is only the One.

We want to cut this C3 population off at the root.