Insert demonstrative pronoun:

1) This article is easy and that one is difficult.

2) Pass me those magazines. Thank you.

3) This boy is fond of music and his dream is to become pianist.

4) Who is that little girl at the window.

5) These books are mine and those are yours.

6) Are those men over there your friends?

7) These flowers are beautiful, aren’t they?

8) Leave these two dictionaries on my table and take those books on the table over there to the library.

9) This picture is framed and that one is not.

10) This roof is red and that one is green.