阿摩線上測驗
No matter what happens, I will always be there to back you up. That’s _____ a friend is for.
(A)what
(B)when
(C)where
(D)while
答案：登入後查看
統計： A(1058), B(95), C(107), D(70), E(0) #397155
統計： A(1058), B(95), C(107), D(70), E(0) #397155
