问题
选择题
-________have you visited the Great Wall?
-Once.[ ]
A. How many times
B. How often
C. How soon
D. How long
答案
答案：A
搜题请搜索小程序“爱下问搜题”
-________have you visited the Great Wall?
-Once.[ ]
A. How many times
B. How often
C. How soon
D. How long
答案：A