34 Trash is a problem that has _____ humans since they moved into cities. And dealing with it is messy and expensive.
(A) embarked
(B) enacted
(C) plagued
(D) obliged
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統計: A(184), B(118), C(447), D(136), E(0) #2032907
統計: A(184), B(118), C(447), D(136), E(0) #2032907