英语作文in this part,you are asked to write a note of congratula

Hello,John !I hear that you have passed the examination so I am writing to show my congratulations to you on your success.I think it is your hard work that led to your success.Last term ,you always worked very hard and spent most of your time in studying in our classroom instead of playing out like others .And you have a strong belief and desire for knowledge .I often admire you for your devotion to your study.I should learn from you.I hope that we can improve our study at the same time.I think we can make it .
Yours.
Linda.