16. Sarah wrote a _______ apology letter to her friend, honestly admitting her mistake.
(A) talkative
(B) sincere
(C) cunning
(D) wicked。
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統計: A(19), B(294), C(5), D(8), E(0) #3418382
統計: A(19), B(294), C(5), D(8), E(0) #3418382