B. Study these sentences. Write O if the sentence is for the opening, or C for closing.
1. ……….. Thank you for your fax and Purchase Order 0601.
2. ……….. We are at your service at all times.
3. ……….. We are pleased to acknowledge your letter for our sofas.
4. ……….. I apologize for the inconvenience, and hope we can work out an acceptable solution for you.
5. ……….. Please let us know your decision as soon as possible. Thank you for your consideration.
6. ……….. We appreciate your placing an order for ten Intex cabinets Cat.No.121.
7. ……….. Thank you for your order No. 456 for our Suitcases and briefcases.
8. ……….. We would like you to confirm whether you are interested in our offer.
9. ……….. We hope we shall have the pleasure of doing business with you again in the near future.
10. ……….. This is to acknowledge with thanks your order of 2 January 2006 for the following.