“朋友圈”找客户的方法主要是指以下哪些网站？（）

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

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

单项选择题While （） an enquiry, you ought to enquire into quality specification and price etc.

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