Money obtained from selling ___ is used to subsidise the service, but the costs of collection are much greater.

国际进阶U2单词练习根据英文意思，填写重点单词或词组（due to; subsidise; fringe; compete; prospect）1.the chances of being successful2.caused by sb/sth; because of sb/sth3.the outer edge of an area or a group4. to give money to sb or an organization to help pay for sth5. to try to be more successful or better than sb else who's trying to do the same as you