May I add your contact information to my address book?

He became a billionaire at a young age.

I'm captivated by the beautiful feather color of the bird of paradise.

Her hairstyle is characterized by a bowknot.

I often go birdwatching in the park on weekends.

The morning of the day before yesterday, I woke up early and watched the sunrise.

The pilot ensures the safe operation of the airplane.

I submitted the report to the section manager.

My house is in the fifth district of Tokyo.

The total length of this river is about 100 kilometers.