6. From the mid-1990s, there has been a growing demand to ______ the work of different agencies at the border in order to facilitate trade.
(A) coordinator
(B) coordination
(C) coordinate
(D) coordinated
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統計: A(0), B(0), C(3), D(0), E(0) #3892295
統計: A(0), B(0), C(3), D(0), E(0) #3892295