阿摩線上測驗
37. After failing many subjects, the student finally realized ________ he had to be more serious with his
studies.
(A) if
(B) of
(C) that
(D) what
答案：登入後查看
統計： A(12), B(8), C(421), D(41), E(0) #2343908
統計： A(12), B(8), C(421), D(41), E(0) #2343908
