17. My friends from South Africa _________ many places around the island ever since they came to Taiwan.
(A)visit
(B) visited
(C) are visiting
(D)have visited
答案:登入後查看
統計: A(58), B(232), C(77), D(1915), E(0) #1936711
統計: A(58), B(232), C(77), D(1915), E(0) #1936711