阿摩線上測驗
24. Building this bridge has already been too costly in terms of people who _____ while working on it.
(A) be kill
(B) been killed
(C) have killed
(D) have been killed
答案：登入後查看
統計： A(23), B(114), C(86), D(506), E(0) #3920223
統計： A(23), B(114), C(86), D(506), E(0) #3920223
