Jawaban:

1. Personal letter is a type of letter that contains personal matter and for personal purposes, usually from one individual to another.

2.

My dear Arup,

Thank you very much for your sweet letter. You have mentioned that your school will remain closed for the summer vacation from 26th May for a month. I would like to give you a proposal for spending a few days with us in our village during the vacation. After long confinement in the city, I am sure you will thoroughly enjoy the countryside. The rural environment will refresh your mind and restore your energy. Besides, my parents will be very glad to have you.

Please do come.