15. Doctors agree that it is imperative that ___ smokers give up the imprudent habit.
(A) inveterate
(B) impudent
(C) incendiary
(D) incipient
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統計: A(19), B(5), C(8), D(17), E(0) #1542247
統計: A(19), B(5), C(8), D(17), E(0) #1542247