The company has been running its Houston office _____ the beginning of 2003.
(A)for
(B)at
(C)since
(D)in

答案:登入後查看
統計: A(10), B(57), C(180), D(43), E(0) #353204

詳解 (共 1 筆)

#651661
has/have + been + since
6
0