What should I do if the topic of the paper is repeated with my classmates?
It is not terrible to repeat the title of the paper. First of all, you should contact the tutor in time to see what attitude the tutor has towards the topic repetition of the paper. It doesn't matter if the topic is repeated, but the topic can't be too old. Of course, the content can't be the same, we should have our own innovation. You can put the reference of the other party's article composition in the literature review part, point out that someone has done similar research, briefly state the views of the other party's article, point out the merits and shortcomings of your own research, and point out the shortcomings of the other party, or you may further improve or give improvement measures in your own research. In short, don't copy. The general topic will be read by the tutor first, and it will be fine if the tutor approves it.