27. What's the main purpose of this letter?
(A) To remind Mr. Johnson about an upcoming appointment
(B) To inform Mr. Johnson about a membership benefit
(C) To invite Mr. Johnson to an exclusive club gathering
(D) To promote membership enrollment to Mr. Johnson
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統計: A(0), B(2), C(1), D(0), E(0) #3556469
統計: A(0), B(2), C(1), D(0), E(0) #3556469