45 The marine police discovered that human ________ on the sea continues to rise at a staggering rate.
(A)trafficking
(B)traffic
(C)ticketing
(D)tariff .
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統計: A(118), B(20), C(2), D(12), E(0) #1809399
統計: A(118), B(20), C(2), D(12), E(0) #1809399