We are enclosing a full set of copy documents ______this first consignment
A. referring
B. covering
C. regarding to
D. as for
第1题
In your letter of April 10, you did not mention ____ the price of arts & crafts.
A. to raise
B. having raised
C. rise
D. having risen
第4题
There is a great demand in Europe for leather gloves ____ high quality.
A. for
B. to
C. at
D. of
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