The root of this tree is very deep and strong.

Looking at it overall, I think this project is a success.

He tried to solve the problem radically.

A comprehensive reform is necessary to eradicate the root of the problem.

We believe that we need to reform the education system.

We believe that a reform of the education system is necessary.

We need to review the whole plan.

Looking at it as a whole, his plan is likely to succeed.

Your cooperation is needed for this project.

I need you.