8 Although they have been tamed, circus tigers can____ attack their trainer.
(A)unexpectedly
(B)gracefully
(C)elegantly
(D)nicely
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統計: A(304), B(23), C(18), D(10), E(0) #1338787
統計: A(304), B(23), C(18), D(10), E(0) #1338787