阿摩線上測驗
7. My mother always says we should think things through before ________ anything.
(A) doing
(B) I am doing
(C) do
(D) to do
答案：登入後查看
統計： A(518), B(26), C(134), D(81), E(0) #1027092
統計： A(518), B(26), C(134), D(81), E(0) #1027092
