问题补充：
— How do you like Guilin?
— It is the most beautiful place I have ever been to.
A. where
B. which
C. that
D. what
答案：
A. where
B. which
(答案→)C. that
D. what
解析：句意:--你感觉桂林怎样？--它是我去过的最美丽的地方。这里是定语从句，先行词是place，关系词在从句中作宾语，因为先行词有最高级修饰所以不能用which，what不能引导定语从句，故选C。
