单项选择题
If you will send us a catalog by air,we shall（）very much.
A.appreciate
B.appreciating
C.appreciation
D.appreciaeit
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单项选择题
We（）some brochurs（）to illustrate the procucts we manufactured.
A．enclose,to you
B．enclose you,\
C．enclose,\
D．enclose,you -
填空题
We are glad that in the past few years,（）joint efforts,have greatly promoted both business and friendship. -
填空题
As to chemical products we are well connected（）the major producers in America.
