阿摩線上測驗
31 Customs brokers are essentially concerned with presenting and processing Customs documentation
______importers or exporters.
(A)on behalf of
(B) by means of
(C)in addition to
(D)with regard to
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統計： A(159), B(6), C(8), D(16), E(0) #2013457
統計： A(159), B(6), C(8), D(16), E(0) #2013457
