She has already visited the place where his father used to work 或 She has already visited the place which his father used to work in 或 She has already visited the place in which his father used to work【 注意which和where的用法和区别】
The speech competition was organized by our school
Where do lots of foreigners come to China to visit?因为划线部分是去的地方,所以提问是对地点用where