31 In a sound home fire escape plan, it is important to ensure that all ways out of each room and the home are clear,
free of ____and can be opened easily.
(A) clutter
(B) crackle
(C) caution
(D) calculation
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在一個完善的家庭火災逃生計劃中，重要的是...
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clutter雜亂 a state o...
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