英语句子单数改复数!
问题描述：
英语句子单数改复数!
1、it's a knife.
2、this is my book.
3、what's this?
4、what colour is the leaf?
5、is the boos new
答
1、These are knives.
2、these are our books.
3、what are these?
4、what colour are the leaves?
5、are the boos new