school is really great. I am making lots of friends and studying very hard. With all my stuff， I simplyn't think of anything I need， so if you would like， you can just send me a card， as I would love to hear from you.
After receiving his son's letter， the father immediately replies by sending a letter back.
I know that astronomy， economics， and oceanography are enough to keep even an honor student busy. Do not forget that the pursuit of knowledge is a noble task， and you can never study enough.