13. As the time of shipment is fast approaching, we must ask you to fax the L/C and shipping ______immediately.
(A)advice
(B)do
cuments
(C)manual
(D)instructions。
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統計: A(4), B(18), C(0), D(51), E(0) #752269
統計: A(4), B(18), C(0), D(51), E(0) #752269