阿摩線上測驗
35. We have a moral ________ to help those who are less fortunate and in need of assistance.
(A) alternation
(B) compression
(C) discretion
(D) obligation
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統計： A(2), B(4), C(2), D(16), E(0) #3930668
統計： A(2), B(4), C(2), D(16), E(0) #3930668
