Studying the history of the Middle Ages is very interesting.

Neutron stars are known for their density and strong gravity.

A neutron is part of an atomic nucleus.

Even if you are rich, you cannot buy everything.

He is not at all lazy.

The content of that book was greatly interesting.

This book is very interesting.

I set aside time for studying every day.

I study at the library every day.

I try to study at least one hour every day.