4. Can you tell me when ______ ?
(A) the train leaves
(B) does the train leave
(C) leaves the train
(D) does leave the train
答案:登入後查看
統計: A(442), B(227), C(38), D(10), E(0) #3101625
統計: A(442), B(227), C(38), D(10), E(0) #3101625