He is conducting research on a new energy source.

I am reading the Old Testament.

He has risen in social standing.

We took a one-hour rest.

My brother is a graduate student at the University of Tokyo.

He is participating in an elementary level Japanese class.

He is a famous baseball player.

I will go to Tokyo by limited express train.

My body can't keep up with the sudden change in temperature.

He was taken to the hospital because of dyspnea.