21. This agreement may be ____ six months before its expiry.

A. expanded B. renewed C. postponed D. prolonged

22. The bank on the buyer's side in collection arrangement is the ____.

A. remitting bank B. collecting bank C. opening bank D. notifying bank

23. Which of the four choices is NOT an appropriate response to the following sentence:" Do you mind opening the windows?" ____.

A. Surely not B. Not at all C. That's all right D. No, of course not

24. The purpose of a promotion letter is to ____ the prospective buyer's interest.

A. attract B. arouse C. attend D. alter

25. When you ___ an agent, the appointment is usually ____ in writing.

A. need, met B. want, take C. appoint, made. D. require, make

Ⅲ. Translate the following letter into English in a proper form:
纽约ABC贸易有限公司

敬启者：

你方3月21日来函收到，从中我们遗憾地得悉你方认为我124号货定价偏高。你们也许知道，我们的商品在许多国家都深受欢迎。尽管目前供应有限，需求却在增加。如果将我们的商品与其它商品加以比较，相信你方会同意我们的价格是可行的。实际上，我们已将价格降至最低，并按此与其他买方大量成交。

如果你们同意将订货数量增至5，000箱，我们愿意将原报价再削减2%。灾是我们能做的最大限度，希望你们能接受。 如蒙早复，不胜感激。

此致

中国北方进出口公司

中国.天津

1999年4月24日