1 . These terraces were built by the local Zhuang and Yao people,________Guangxi is home.（是……的家园）(根据汉语提示完成句子）

2 . I bought three reference books yesterday, two of ________ were about Roman history.（用适当的词填空）

3 . These terraces were built by the local Zhuang and Yao people,________Guangxi is home. 龙脊梯田的建造者是壮族和瑶族人民，广西是他们的家园。