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
单项选择题 Although （） primarily to promote trade relations, these agreements also foster technological cooperation.
单项选择题 （） our general agent, you would also have to look after the advertising.
单项选择题 I have received （） professional training.
