121. The revised safety regulations apply to all factory workers, _______ of their seniority or position.
(A) regarding
(B) regards
(C) regard
(D) regardless
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統計: A(31), B(2), C(9), D(41), E(0) #3804679
統計: A(31), B(2), C(9), D(41), E(0) #3804679