题目内容：

外贸函电
题号:19 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
We accept your order _____ condition that your buyer accepts October shipment.
选项:
a、for
b、in
c、at
d、on
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题号:20 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:5
内容:
We will make offers upon receipt ______ your specific enquiries.
选项:
a、on
b、with
c、in
d、of