问题
选择题
---What’s your impression of the Great Wall?
---Wonderful! Once ____ , it can never be forgotten.
A．seen
B．seeing
C．being seen
D．saw
答案
答案：A
搜题请搜索小程序“爱下问搜题”
---What’s your impression of the Great Wall?
---Wonderful! Once ____ , it can never be forgotten.
A．seen
B．seeing
C．being seen
D．saw
答案：A