阿摩線上測驗
32. When you pass through the underpass, sometimes you will see a man in rags ________ for a living.
(A) to beg
(B) begged
(C) begging
(D) are begging
答案：登入後查看
統計： A(59), B(29), C(312), D(34), E(0) #593882
統計： A(59), B(29), C(312), D(34), E(0) #593882
