外国旅游者在签证有效期内，可以在中国任何地区内自由旅行，但他们必须尊重当地的风俗习惯。
参考答案：错
The Palace Museum is the best place _____ I've ever visited. There are many old things in it. [ ]
A. who
B. that
C. where
垫饼
