Attend classical concert is not used for buy. Buy is used for fun. Textbook is used for learn. Treat addict is used for educate or entertain. Attend classical concert is not used for educate or entertain. Textbook is not used for listen to opera music. Textbook is not used for make busy work. Attend classical concert is used for fun. Learn is motivated by goal know something. Attend classical concert is not used for money. Learn is used for money. Money is used for buy. Play sport is used for money.
Buy is used for fun.