He is a world-renowned bacteriologist.

There is an old incandescent light bulb in my room.

When I caught a cold, I tried heat therapy.

I am looking forward to the day we meet again.

I have to retake the exam.

The computer has frozen, so it needs a restart.

The computer froze, so I restarted it.

The bacteriology class is very interesting.

I need a heat-killing bee ball in my garden.

She is known as an ancient queen.