请帮我合并两个英语句子谢谢请用who,which ,或that合并句子：一,The girl is sewing a dress .The girl studies in a vocational school二,The tall building is a school.The building stands at the end of the street

1，the girl which +后面原句 is +前原句

1. The girl who studies in a vocational shool is sewing a dress.
2. The tall building is a shool, which stands at the end of the street.
The tall building which stands at the end of the street is a school.

The girl who studies in a vocational school is sewing a dress .
The tall building that stands at the end of the street is a school.

1 The girl who studies in a vocational school is sewing a dress.
2 The tall building which stands at the end of the street is a school.
定语从句