He is doing exercises to strengthen the dorsiflexion of his ankle.

This class is very tedious.

I am bored.

My house is near the mountains.

He makes a living in the mining industry.

How many rooms are there in your house?

He was reading a book to kill time.

This class is unbearably tedious.

He lives in my brother's family's house.

This is my grandparents' house.