My room is on top of the building.

This book is the first volume of a trilogy.

We will make a decision after listening to his opinion.

It is important to understand the importance of health.

His explanation was impossible to understand.

He bought six apples.

He bought six apples.

My room is on the second floor, and your room is above mine.

Tanaka-san, have you finished the report?

Mr. Ue is my best friend.