write 10 sentences with demonstrative pronouns(this, that,these,those)

1 This pen is mine.

2 I bought this book yeaterday.

3 These flowers are beautiful.

4 Those boys and girls are my classmates.

5 That dog can bite you.

6 I like this kind of chocolate.

7 These pens are cheaper than those.

8 You take this bike and I'll take that one.

9 Let's eat these apples.

10 That man is our teacher.