(catch)up with others in his class,the student is working very hard.
问题描述:
(catch)up with others in his class,the student is working very hard.
答
追上了他班里的其他同学,这个学生学习非常努力。
答
(为了)追上他班里的其他同学,这个学生学习非常努力.
catch up是追赶,追上的意思.
有什么不懂的还可以问我~