Secondary and higher education_____ available to all high school graduates in this country so far.Secondary and higher education_____ available to all high school graduates in this country so far.A. have made B. were made themselvesC. have been madeD. were made it
热心网友
首先so far是现在完成时的标志。排除B，D；然后这里要用被动态。所以选C。
热心网友
同意黑子的说法,选cmade something ....(adj.)