1. on business
I'm not a tourist. I'm here on business.
She isn't on holiday. She is on business.
I'm here on business.
I always take an extra suit when I'm travelling on business.
Are you flying to Rome on business?
I'm going to Greece on business next week.
I travel a lot on business.
2. for business
英語 "という言葉geschäftlich"(for business)集合で発生します。
Duolingo a1-a2 (371-430)