在学习和生活中，每个人都会有苦恼的事。假设你叫Mandy，你的好朋友Nancy遇到了一些烦恼的事。请根据下面的提示， 给她写一封80词左右的邮件， 并提出自己的建议。开头和结尾已给出，不计入总词数。

※shy；don't have many friends at school；

※math is difficult；often get poor grades；

※difficult to talk to her parents

Dear Nancy，

    I'm sorry that you have so many problems.Here is my advice for you.

    I hope you will feel happy again.

Yours，

Mandy