1. The letter we sent last week is an enquiry ____ color TV sets.
A. about
B. for
C. of
D. as
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2.If you are interested, we will send you a sample lot ____ charge.
A.within
B.with
C.for
D.free of
3.They found an opportunity to purchase six ____ leather shoes.
A.thousands pairs
B.thousand pair of
C.thousands of pair
D.thousand pairs of
4.What kind of products do you think ____ particularly interested ____ ?
A.are they, in
B.they are, in
C.are they
D.they are, /
5.It may interest you to know that there is a good demand here for Chinese Black Tea ____ prices.
A.at moderate
B.in cheap
C.for low
D.on dear