80. Mary: You haven’t been to Beijing, have you？ Mark:______. And how I wish to go there again!　　
(A) Yes, I have
(B) Yes, I haven’t　
(C) No, I have
(D) No, I haven’t

答案：登入後查看
統計： A(59), B(6), C(14), D(19), E(0) #1592290