第1个回答 2012-09-25
I haven't been to Beijing yet.
Have you been to Beijing yet?
祝你学习进步,更上一层楼! (*^__^*)
不明白的再问哟,请及时采纳,多谢!本回答被提问者采纳
第2个回答 2012-09-25
I haven't been to Beijing。
第3个回答 2012-09-25
I haven't been to Beijing yet.
Have you ever been to Beijing?