This job is very arduous.

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.

He is famous for painting pictures of the beautiful scenery of the South Seas.

When we got lost in the mountains, the rescue team helped us.

What are you guys doing?

I was troubled by his weak attitude.