阿摩線上測驗
45. A: ______
B: About once every month.
(A) When will we do the evacuation drill?
(B) Why do we do an evacuation drill so often?
(C) How do we carry out the evacuation drill?
(D) How often do we do the evacuation drill?
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統計： A(3), B(1), C(1), D(18), E(0) #3492378
統計： A(3), B(1), C(1), D(18), E(0) #3492378
