My father has been working as a silk manufacturer for many years.

This problem requires the calculation of the tangent.

We will make a decision after listening to his opinion.

He bought a new jacket.

This book is the first volume of a trilogy.

My room is on top of the building.

He was worst at word problems in elementary school math.

He picked up a pen to write down the poem.

It's difficult to remember the stroke order of kanji.

It is important to understand the importance of health.