【正确答案】 Message
Dear roommates,
The Student Union of our college calls on us to donate the used winter coats to the children in rural areas. All those who will donate your used winter clothes please go to the Main Building at 12 o’clock on Saturday noon to hand over them to the Student Union. I am so sorry that I can’t tell you the message face to face, for I have something urgent to deal with. Make sure you will get to the Main Building on time. See you then.
Sincerely yours,
Li Ming