Giúp mình bài này với ạ, Mình cảm ơn mọi người nhiều
A friend of yours has just decided to change her aspiration from natural science into social science. She has written to you asking for some advice about how to prepare well for the national high school exam . Write a letter (80- 100 words) to your friend giving him/her a few pieces of advice that you think are useful.