题目内容：
根据汉语提示完成句子。
1.I help my mother put up the _______ (圣诞树).
2.He builds a chair with some _______ (小树枝).
3.Let's sing _______ (一起).
4.Who knows the answer? Hands _______ (向上) please!
5.On my birthday, she _______ (给) me an interesting book.
参考答案：