The purpose() this letter is to explore the possibilities of developing trade with you.
A、on
B、of
C、to
D、at
第1题
We very much () that you are not in a position to entertain any fresh orders at present.
A、regret
B、regret to learn
C、regretful
D、regrettable
第2题
Please send us three copies of your latest catalogue () your earliest convenience.
A、on
B、of
C、to
D、at
第3题
Your samples should give us some idea of the colors and quality () the products
A、for
B、with
C、on
D、of
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