阿摩線上測驗
21. It took me three hours _____ the work.
(A) do
(B) to do
(C) doing
(D) done
答案：登入後查看
統計： A(13), B(139), C(64), D(16), E(0) #3920220
統計： A(13), B(139), C(64), D(16), E(0) #3920220
