This bottle is reusable.

Who is the user of this software?

He is the most competent employee of our company.

Are you really not going to use this unused laptop?

It is important for each person to fulfill their role.

We are aiming to kill two birds with one stone with this plan.

His words held a double surprise, like 'isseki-rokuto'.

He acted according to my instructions one by one.

He has a deep interest in archaeology.

He understands the importance of learning.