Dear Liu Yu,

    How time flies! You are going to graduate soon. Congratulations! In the past three years, I believe your wonderful school life has left you a lot of special memories. You must have grown up a lot and be able to manage your own life. Can you tell me the great progress you've made? What are you going to do to improve yourself this summer? Hope you can share your experience and plans with me.

    Wish you all the best.

Yours,

Jack