阿摩線上測驗
16. ________ , Mary usually follows the direction carefully.
(A)When taking drugs
(B)When takes drugs
(C)When took drugs
(D)When in taking drugs
答案：登入後查看
統計： A(847), B(71), C(16), D(25), E(0) #1589706
統計： A(847), B(71), C(16), D(25), E(0) #1589706
