There are many things placed in my room.

He has a very passive personality.

This bottle is reusable.

Are you really not going to use this unused laptop?

He is the most competent employee of our company.

Who is the user of this software?

This factory manufactures iron using coke.

We have developed a new method to produce charcoal from wood.

My grandfather used to work in charcoal production.

He works digging out coal.