阿摩線上測驗
2 To protect the houses from air pollution, a special coating was applied on the surface of the _____
walls for all the houses in the town.
(A) exterior
(B) revision
(C) insanity
(D) diarrhea
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統計： A(30), B(8), C(4), D(3), E(0) #3412811
統計： A(30), B(8), C(4), D(3), E(0) #3412811
