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同学你好~
Because it was the first that they worked driving buses, the buses were very bumpy and were seldom on time.
they worked driving buses可以改成they worked as bus drivers
the buses改成the bus rides，乘坐公交车很颠簸

Meanwhile, the trains were often crowded, so the public complained about this.
this指代不明，抱怨的具体是什么要写清楚

Listening the complain of people, the busmen were very pleased.
listening改成Hearing听到

Tired of driving buses, the students threatened to go on strike and few days later, they really did so.
a few days 几天

Out of the pressure, the government agreed the agreement and paid the busmen high wages, but the public thought that the wages were too high.
Under the pressure 迫于压力
agreed the agreement 改成 accepted the busmen's requirement 接受了要求

祝同学学习进步~