阿摩線上測驗
24. To keep our classroom clean, our teacher has us _____ the floors every day.
(A) sweep
(B) sweeping
(C) to sweep
(D) are sweeping
答案：登入後查看
統計： A(459), B(86), C(113), D(1), E(0) #666139
統計： A(459), B(86), C(113), D(1), E(0) #666139
