Peter is used to a simple way of living. He doesn't want to ______ so much money on food or clothing.
【正确答案】 B
【答案解析】．．on something或spend．．．(in)doing something表示“花钱或花时间(做)某事”，pay指“付款”，当物作主语时表达“花费”要用cost，根据该句的意思，应选B。