阿摩線上測驗
38. I will explain to you _____
(A) how does the machine work
(B) how do we operate the machine
(C) how we to operate the machine
(D) how the machine works
答案：登入後查看
統計： A(34), B(23), C(26), D(152), E(0) #2062340
統計： A(34), B(23), C(26), D(152), E(0) #2062340
