单项选择题

The importer will submit references if these ______ given in the preliminary negotiations.

A．are not
B．had not been
C．has not been
D．were not
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单项选择题
Although ______ primarily to promote trade relations, these agreements also foster technological cooperation.
A．designed
B．they are to be designed
C．it is designed
D．they are being designed
单项选择题
______ our general agent, you would also have to look after the advertising.
A．Be
B．For
C．To be
D．As
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