Every year an average of 78,000 foreign high school students (1) 1. (are/goes/go )to study in the U

题目

Every year an average of 78,000 foreign high school students (1) 1. (are/goes/go )to study in the U

答案

an average(total) of +复数名词"作主语谓语动词用复数形式 "the average(total) of+复数名词"作主语谓语动词须用单数形式
be to do 打算做
所以应该用go to study