______ your part, you must urge your custo
题型:单项选择题
问题:
______ your part, you must urge your customers to open the L/C without delay.
A.At
B.In
C.For
D.On
______ your part, you must urge your customers to open the L/C without delay.
A.At
B.In
C.For
D.On