Answer:
top left:
dear まさお,
Are you going to the baseball game this Saturday?
from じゅんじ
top right:
dear じゅんじ,
no, I'm not going to the game.I am going to my grandfather's house with my younger brother.
from まさお
bottom:
dear まさこ,
yeah, I'm going to the movies with けんじ this Sunday. After that we're going to a pizza restaurant. Then, we're going to まさみ's party. Exciting, right?!
from きみえ
Explanation:
yeah :) hope it helps!
