2. His engagement played a _____ role in the success of the event.
(A) unimportant
(B) significant
(C) decent
(D) precarious
(E) capricious
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統計: A(2), B(166), C(6), D(1), E(3) #597915
統計: A(2), B(166), C(6), D(1), E(3) #597915