One of the biggest Transportationproblem are cars and buses’ poll_英语解答

One of the biggest Transportationproblem are cars and buses’ pollution.有没有语法错误

人气：226 ℃　时间：2020-05-24 14:57:21

解答

be动词应该用单数is,应为主语是单数,One of the biggest Transportation problem ,当前最大的交通问题之一是轿车和公交车的污染问题.