His art is odd, but that's why I like it.

His behavior was increasing in weirdness.

The population is increasing rapidly.

I think yesterday's test was more difficult than ever.

I couldn't understand his actions.

He started to act immediately.

He used the bar to open the door.

He was squatting under the azalea.

This machine uses the principle of a lever.

With this lever, you can easily lift heavy objects.