My dream is to climb Mount Amakami.

He has a very passive personality.

I exchanged my old smartphone for a new one.

Let's exchange keys tomorrow.

We exchanged our old books for new ones through barter.

We write in the exchange diary every day.

We wrote essays for peer grading.

He works at the switchboard.

He saved money as a safety net before starting his own business.

My new safety razor is very easy to use.