Directions: Fill in each of the following blanks with a suitable preposition.

Dear Sirs

Your name and address have been recommended 　1　us by the Commercial Counselor’s Office of our Embassy in America as a well-established exporter 　2　all kinds of bicycles in your country. We now write to you to see if we can establish business relations.

We have been an importer of light industrial goods 　3　many years. At present, we are interested in various kinds of mountain bikes, and would appreciate your catalogues and quotations.

If your prices are acceptable, we believe that we may have good prospect 　4　 cooperating 　5　marketing your products here in China.

We are looking forward to your early reply.

Yours sincerely