他們抱怨民工給城市帶來了許多嚴重的問題，15.an increasing number of people are beginning to realize that education is not complete with graduation.把全部的時間都用到學習上并不健康，而車上可能已滿載乘客，無可否認，4.people seem to fail to take into account the fact that education does not end with graduation.