Some of these sentences aren't right.correct them. 6)i'd like to know if you'll come to the party. 7)after they'll buy the food,they'll begin cooking. 8)write to me if you come to moscow next summer.

6) I'd like to know if you will come to the party.
7) After they have bought the food, they will begin cooking.
8) Write to me if you will come to Moscow next summer.