阿摩線上測驗
40. When the train is about to pull in, the signals on the platform will ______.
(A)flare
(B)flash
(C)fling
(D)flush
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統計： A(15), B(160), C(9), D(20), E(0) #2928743
統計： A(15), B(160), C(9), D(20), E(0) #2928743
