阿摩線上測驗
49.The Flight 506 to Amsterdam, scheduled to depart at 11:30 a.m., has been delayed ________ a big fog.
(A) on account of
(B) in case of
(C) by way of
(D) aware of
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統計： A(41), B(26), C(9), D(3), E(0) #664964
統計： A(41), B(26), C(9), D(3), E(0) #664964
