阿摩線上測驗
15. Mrs. Anderson can always tell when her students _____ enough attention because
they start to doze off.
(A) will not pay
(B) had not paid
(C) is not going to pay
(D) have not been paying
答案：登入後查看
統計： A(4), B(2), C(3), D(23), E(0) #2077459
統計： A(4), B(2), C(3), D(23), E(0) #2077459
