He is studying Japanese grammar.

This restaurant has an all-you-can-drink plan.

Radiation therapy is often used in cancer treatment.

He is undergoing music therapy.

I am waiting for the visitor to come.

He learned how to operate a howitzer.

This area has plenty of natural resources.

This region has plenty of natural resources.

He is an expert in criminal law.

In this restaurant, you can eat as much pizza as you like.