This math problem is really difficult.

He is suffering from long hours of work.

A boy was playing soccer in the park.

He blames himself for anything and everything.

He showed disapproval of my proposal.

I came, I saw, and I won.

How long did you wait?

I was surprised to find a bedbug in the futon.

He worked as a middleman in that transaction.

The secret to this company's success is harmony among people.