Education in government colleges is very cheap, but if you go to the ________ colleges, it is much more expensive.
A.privateB.publicC.personalD.secret在线课程A
题意：在政府大学受教育费用很低，但如果上私立大学，费用就高很多。private私人的；私立的；public公众的；personal个人的，私人的；secret秘密的。根据语境应选A项。