请各位英语高手帮忙修改以下报幕词，万分感谢！急！

Question

我女儿5月31号晚上要主持她所在幼儿园举办的六一晚会，有些报幕词是英文的，是她园长写的，我感觉有点不对劲，由于水平有限，请各位大虾帮忙看看，看有没有语病或错漏。谢谢！以下是台词：
We small-class-based younger brother and sister are very brave,they are actively involved in rehearsal,for we have prepared a lovely dance<baby and dear>.
该节目是一个爵士舞，叫《Baby and Dear》,是小班小朋友跳的。我觉得第一个单词we是不是改为our 比较好些，还有brother and sister 应该加复数吧。不对请赐教！看看其他有没问题，还有几天要用了，各位抓紧帮帮忙啊！谢谢！

Answer 1

Our younger brothers and sisters of small-class-based are very brave,they are actively involved in rehearsal,and have prepared a lovely dance for us ,Let's enjoy :<baby and dear>.
这算是通顺一点。

Answer 2

We small-class-based younger brothers and sisters
are very brave,they are actively involved in rehearsal,for who we have prepared a lovely dance<baby and dear
那个we和后面是同位语没问题； brother and sister 应该加复数；rehearsal前面应加the；最后一句they are actively involved in the rehearsal, 下一句换成and here we have prepared a lovely dance<baby and dear>.Welcome!会更好

Answer 3

We small-class-based younger brothers and sisters
are very brave,they are actively involved in rehearsal,for who we have prepared a lovely dance<baby and dear>.
那个we和后面是同位语没问题，