7、One of your friend has asked you to be a parner in his new start-up business.Write a letter to him and say:
-What is your opinion on his new business idea?
-What have you decided on this matter?
-What are the reasons for your decision?
8、Your friend and his/her family from a foreign country are coming to visit you.Write a letter to his/her and say：
-Invite your friend and the family to stay at your home.
-Suggest place to visit in your country.
-Give other useful tips.
