将以下句子用定语从句的形式写出
问题描述：
将以下句子用定语从句的形式写出
1、I have five balloons.Three of them are yellow.
2、You'd better tell her the name of the book.She can find information about the project there.
3、They have just started their trip to Tibet.They prepared for it for about a month.
答
They have just started their trip to Tibet,which they prepared for for about a month. You'd better tell her the name of the book where she can find information about the project.I have five balloons,o...