正确答案: A

upto

题目：This agreement shall be cancelled in case the second party fails to sell the agreed quantity within six months.（）

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学习资料的答案和解析：

[单选题]It is necessary to make a status inquiry ____ your customer before the execution of the order.

into

[单选题]The offer is firm subject ____ before October 1.

to your reply reaching us

[单选题]For（）commodities as oil, sand and timber, rail is cheaper than road.

bulk

[单选题]（）crowded orders；we have sold out all the goods scheduled for shipment with in this year.

As a result of