8. Many workers join labor ________ hoping this organization can protect and promote their common interests.
(A) newscasts
(B) sheriffs
(C) timbers
(D) unions
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統計: A(8), B(6), C(3), D(83), E(0) #1573211
統計: A(8), B(6), C(3), D(83), E(0) #1573211