2. He was constantly persecuted by his _____ enemies.
(A) implacable
(B) impercipient
(C) impaired
(D) impermeable
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統計: A(92), B(47), C(17), D(41), E(0) #3278134
統計: A(92), B(47), C(17), D(41), E(0) #3278134