某青少年英文雜志設立于專題"Problem &Advice"來幫助青少年解決成長中的煩惱和困惑。假如你是該欄目的編輯李華，請你閱讀英國交換生 Sandy 發來的一條求助消息，根據其內容回復郵件，為她提出建議。
Dear Li Hua，
    I'm really bad at maths.I work hard but I still fail the exam.My parents are unhappy about the grades.I also feel sad and have no confidence.I'm worried that I won't pass the final exam.What should I do？
Yours，
Sandy要點提示；
（1）表示理解；
（2）提出建議；
（3）給予鼓勵。
注意：
（1）詞數 80-100；
（2）語句通順，語法正確，可適當發揮，以使行文連貫；
（3）文中不能出現真實的校名和人名；
（4）郵件的開頭和結尾已為你寫好，不計入總詞數。
Dear Sandy，
______
Yours，
Li Hua

【考點】書信類；日常生活．

【答案】Dear Sandy，
   You don't have to be too upset，because mathematics is really difficult to learn.I have had similar experiences before.I suggest that you first listen carefully and take notes during class.You need to complete your homework seriously after class.You need to do more math exercises on a regular basis.If you encounter a problem you don't understand，you should seek help from your teacher or classmates in a timely manner.If necessary，you can attend some remedial classes to improve your math grades.I hope my suggestions are helpful to you.I believe that as long as you study hard，your grades will definitely improve.
   Yours，
Li Hua