47. We ______ for 20 years.
(A)are in this line of business
(B)do business with European importers in washing machines
(C)have be
en exporting printers
(D)have established here as general exporters。
答案:登入後查看
統計: A(5), B(1), C(48), D(12), E(0) #752303
統計: A(5), B(1), C(48), D(12), E(0) #752303