In other words, he is still a student, isn't he?

His amazing talent startles everyone.

He is an expert in petrochemistry.

On a cold winter night, a kerosene heater is indispensable.

He is known as an oil baron.

He is always the type of person who says this when that is said.

I acted just as he said.

As a matter of fact, I haven't seen that movie yet.

He said whatever he wanted, causing trouble for all of us.

Needless to say, he passed the exam.