假如你是Ms Wang，你的学生李华给你写了封信，诉说他无法融入班集体及交友的苦恼，请你根据以下要点给他回一封建议信。
1. 积极参加班级活动；2. 了解同学们的兴趣爱好； 3. 乐于助人
注意：1. 词数100左右；2. 可适当增加细节，使行文连贯；3. 信的开头和结尾已经给出，不计入总词数。
Dear Li Hua,
I’m sorry you are having trouble in making friends. However, the situation is easy to change if you take my advice. Here are some tips to help you.
Yours, Ms Wang
