题目内容：

Students who study for the test,and then they do well on the exam.请问and then 那里怎么改.

优质解答

students who study for the test do well on the exam. 因为前面的句子其实就是students是主语后面的部分只是修饰作用,后面没有必要再加and then 和they,那样句子变得很累赘.