英语书面表达(80词)

1、你的近况
2、请对方帮你购买英语语法书
3、邀请对方方便时来访
很急呀,要考试了,帮忙!!!!!
要满足80词汇量

这是要写短文书信吗？
Dear ***:
Long time no see, how are you going recently? I'm fine but a bit busy, because I am planning to improve my English grammar, so would you please be so kind to buy me a grammar book in you spare time? I will be very appreciated if you do that. By the way, I will be very pleased if you give me a visit when you are free, so that we can spend sometime together and have a good time.
I look forward to your quick reply.
yours sincerely
***

dear bob, it's a long term to write to you since the last time. what's up, friend? what about your life after graduation.i have made a great progress with my english. but i still fell a little difficult with my grammar.i known you are good at english. so may you help me with my grammar? would you like to give me some suggestions and help me to choose some good english grammar books for my reference? it would help me a lot. thanks. and we had spent a wonderful time last vacation. do you remember that? so would you like to visit me again in your free time? then we would have a good time. looking for your visit. best regards, lynn