题目内容

We thank you for your letter of May 25 and the____catalogue.

A.sent
B.enclosed
C.given
D.presented

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The letter we sent 2 days ago is an enquiry____color TV sets.

A.about
B.for
C.of
D.as

When____an enquiry, you ought to enquiry into quality, specification and price, etc.

A. making
B. offering
C. sending
D. giving

Your full cooperation will be highly____.

A. thank you
B. finding
C. found
D. appreciated

This chemical is made____a special formula.

A.from
B.according to
C.of
D.in

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