原文：近年来，多个省市高校都在探索中外合作办学之路。译文：Several universities in other citie

原文：近年来，多个省市高校都在探索中外合作办学之路。
译文：Several universities in other cities or provinces was exploring their ways of Sino-foreign cooperative education these years.
【正确答案】：
改译：Several universities in other cities or provinces have been exploring their ways of Sino-foreign cooperative education these years.