Ryosuke is my best friend.

He is undergoing electrotherapy for his back pain.

Music therapy is very effective in reducing stress.

I am majoring in econometrics at university.

In Magic: The Gathering, you can place cards in the command zone.

We spread phosphate fertiliser on the field.

When I caught a cold, I tried heat therapy.

He has already finished writing the report, so we use the present perfect form.

His words reminded me of the proverb 'good advice may be uncomfortable to hear.'

His actions are against public order and upstanding morals.