问题
选择题
Is this the second time that you _________ the Summer Palace?[ ]
A. visit
B. are visiting
C. had visited
D. have visited
答案
答案：D
搜题请搜索小程序“爱下问搜题”
Is this the second time that you _________ the Summer Palace?[ ]
A. visit
B. are visiting
C. had visited
D. have visited
答案：D