阿摩線上測驗
35. If it _________ for your help last week, I could not have completed this mission. Thank you so much.
(A) was not
(B) is not
(C) had not been
(D) has not been。
答案：登入後查看
統計： A(46), B(13), C(252), D(9), E(0) #3418401
統計： A(46), B(13), C(252), D(9), E(0) #3418401
