阿摩線上測驗
19. Sometimes, purchasing a new electronic device can be ______ than fixing a broken one.
(A) cost-effective
(B) better cost-effective
(C) more cost-effective
(D) the most cost-effective
答案：登入後查看
統計： A(0), B(1), C(2), D(0), E(0) #3384758
統計： A(0), B(1), C(2), D(0), E(0) #3384758
