阿摩線上測驗
31.
(A)lasts a very long time
(B)provides a broken function
(C)remains a big challenge
(D)receives a high-quality response
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統計： A(1), B(0), C(5), D(2), E(0) #3874110
統計： A(1), B(0), C(5), D(2), E(0) #3874110
