20 He was known for his ________ sense of humor, always ready with a clever remark.
(A) dull
(B) witty
(C) tedious
(D) sluggish
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統計: A(1), B(10), C(3), D(2), E(0) #4027491
統計: A(1), B(10), C(3), D(2), E(0) #4027491