问题
____ visited the Shanghai World Expo is sure to tell you the place is worthy ____ twice． — You can say that again．
A:Those who have; visiting
B:Whoever has; visiting
C:Those who have; to be visited
D:Whoever has; to be visited
B:Whoever has; visiting
C:Those who have; to be visited
D:Whoever has; to be visited
正确答案是：
