阿摩線上測驗
4. I know this is hard, but you must go ______ to succeed.
(A) off
(B) at
(C) to
(D) on
(A) off
(B) at
(C) to
(D) on
答案：登入後查看
統計： A(27), B(12), C(12), D(302), E(0) #3293287
統計： A(27), B(12), C(12), D(302), E(0) #3293287
