阿摩線上測驗
13. Bill never intended to create an instrument for people who could hear. His career was devoted ____ deaf people.
(A) to help
(B) helping
(C) and helped
(D) to helping
答案：登入後查看
統計： A(1), B(0), C(0), D(2), E(0) #3313186
統計： A(1), B(0), C(0), D(2), E(0) #3313186
