阿摩線上測驗
7. To find the answer, we _______ his theories with repeated experiments and discussions.
(A) abated
(B) brawled
(C) endowed
(D) substantiated
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統計： A(12), B(8), C(30), D(62), E(0) #2752267
統計： A(12), B(8), C(30), D(62), E(0) #2752267
