阿摩線上測驗
34. More than 1,600 firefighters are currently working to ________ containment lines as a means to slow the spread of massive bushfires across Australia.
(A) rip off
(B) shore up
(C) take down
(D) sweep away
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統計： A(98), B(166), C(100), D(105), E(0) #2673796
統計： A(98), B(166), C(100), D(105), E(0) #2673796
