编辑以下段落的拼写和语法错误。
原始段落：她们 was very exited to go too the musieum because they had never seen such beautifull art be4.
她们很兴奋地去了博物馆，因为她们以前从未见过这样美丽的艺术品。 

编辑后：她们很兴奋地去了博物馆，因为她们以前从未见过这样美丽的艺术品。 

更改说明： 

- was 改为 were;
- too 改为 to;
- beautifull 改为 beautiful;
- be4 改为 before。