阿摩線上測驗
4. I lost my _______ and fell asleep in class because I didn’t have enough sleep last night.
(A) environment
(B) concentration
(C) disturbance
(D) philosophy
答案：登入後查看
統計： A(16), B(581), C(21), D(16), E(0) #2199388
統計： A(16), B(581), C(21), D(16), E(0) #2199388
