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

We believe that we need to reform the education system.

Your cooperation is needed for this project.

I need you.

This system is very efficient.

I thought he would be late, but he came on time.

He seems to be very tired.

The reason he is thought of that way is because he always works seriously.

It is not thought that he can solve the problem.

In my opinion, this plan has a high chance of success.