The old dog at my house is very smart.

I was surprised when I suddenly heard a dog barking in the middle of the night.

He is suffering from tuberculosis.

I donate blood every year.

This project is facing a lack of funds.

He is a famous science researcher.

My blood sugar level is always kept within a healthy range.

We went to the art museum for an inspection.

He closed his eyelids and took a deep breath.

Looking up at the night sky, Altair was shining brightly.