Directions: Fill in the following blanks with suitable preposition:

Dear Sirs,

We have received your letter 　1　February 7 and are pleased to note your desire to enter 　2　business relations 　3　 us. 　4　compliance 　5　your request, we now offer you 1,000 dozen T-shirts, Art.

No. 141 　6　US$ 13.00 per dozen CIF Port Sudan.

The price offered above is reasonable. As the selling season is approaching, we have received many inquiries 　7　clients 　8　 other districts.

To acquaint you 　9　 some 　10　the commodities we handle, we are sending you 　11　airmail 　12　 separate cover a commodity list and several pamphlets 　13　your reference.

Should you find any other items listed 　14　interest, please let us know.

We look forward 　15　your early reply.

Yours sincerely,

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