He told an ominous story, which made everyone anxious.

I couldn't laugh at his joke and felt awkward.

His jokes are poorly timed.

It's hard to sleep with him because he tosses and turns in his sleep.

He is bad at math and thinks he is dumb.

We camped in a densely wooded area.

He used a radar to search for the ship.

Radio astronomy plays a very important role in understanding the universe.

This superheterodyne receiver is very effective in receiving radio signals.

The British Indian Ocean Territory is a region managed by the UK.