问题
单项选择题
（）your Enquiry No.123，we are sending you a catalog and a sample book for your reference.
A.According
B.Asper
C.As
D.About
答案
参考答案：B
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（）your Enquiry No.123，we are sending you a catalog and a sample book for your reference.
A.According
B.Asper
C.As
D.About
参考答案：B