阿摩線上測驗
119. The warranty covers all mechanical defects _________ a period of two years from the date of purchase.
(A) for
(B) at
(C) by
(D) on
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統計： A(189), B(23), C(63), D(30), E(0) #3804477
統計： A(189), B(23), C(63), D(30), E(0) #3804477
