用1 These are...2 Those are.3 They are...4 This is...5 That is...6 He/ she/ it is 来照句
问题描述：
用1 These are...2 Those are.3 They are...4 This is...5 That is...6 He/ she/ it is 来照句
答
1 These are books.
2 Those are my friends.
3 They are my classmates.
4 This is a book.
5 That is a pen.
6 He is in Grade 1.
She is in Grade 1,too.
It is a cat.