I prepared for horse riding by putting a metal bit on the horse.

I often go horse riding on weekends.

I often enjoy horse riding on weekends.

I prepared hard for the exam.

All the preparations for the party have been completed.

My grandfather used to plow the rice fields with a horse in the old days.

Please turn on the light in the room.

He was alone in the room.

There are a lot of wrigglers in this puddle.

He quickly becomes accustomed to new environments.