阿摩線上測驗
2 Drivers should stay _______ while on the road, keeping an eye out for bikes or other vehicles.
(A) fierce
(B) alert
(C) anxious
(D) initial
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統計： A(2), B(61), C(0), D(3), E(0) #3429306
統計： A(2), B(61), C(0), D(3), E(0) #3429306
