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

This class is very tedious.

I am bored.

We plan to mine for gold in the mountains.

Japan's administrative divisions are divided into prefectures and municipalities.

He was reading a book to kill time.

This class is unbearably tedious.

He makes a living in the mining industry.

How many rooms are there in your house?

We are planning to go to the national park this weekend.