阿摩線上測驗
17 Fathers and sons have a long history of disagreeing on many subjects,____ when the sons are teenagers.
(A) reluctantly
(B) occasionally
(C) particularly
(D) fortunately
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統計： A(15), B(30), C(278), D(18), E(0) #1262170
統計： A(15), B(30), C(278), D(18), E(0) #1262170
