I read this weekly magazine every week.

He was behaving as a model prisoner in the prison.

We crossed the river by crossing the pontoon bridge.

We should respect the ancient customs of that region.

He is doing a specialized study in economics.

He is specially studying mathematics.

I found a Japanese clover flower in the park.

This artwork is subject to droit de suite.

The troposphere is the lowest part of the Earth's atmosphere, and most of the weather occurs here.

My son has started learning taekwondo.