阿摩線上測驗
37 The problem is too difficult _______.
(A) for him be solved
(B) for him to be solved
(C) for him to solve
(D) for him to solve it
答案：登入後查看
統計： A(33), B(165), C(692), D(142), E(0) #725446
統計： A(33), B(165), C(692), D(142), E(0) #725446
