State the kind of the subject expressed by the pronoun it:
1. It is my room. 2. It is the moon that makes you talk to yourself in that silly
way. 3. It is warmer today than it was yesterday. 4. Is it necessary to go there?
5. It is very distressing to me, Sir, to give this information. 6. It's a fine day
today. 7. It's a pleasure to walk to the forest on such a day. 8. It is my pen. 9. I
took a good room. It was very big and light and looked out on the lake. 10. It
was Mendeleev who discovered the Periodic Law of Elements. 11. It is the
shortest month of the year. 12. Is it hot in summer? 13. It was dusky in the
dining-room and quite chilly. 14. The bell rang. It was lean, pale Eddie Warren
in a state of acute distress. 15. It was a little house. It was a little pink house.
16. But in her bosom there was still that bright glowing place. It was almost unbearable.
17. She sat up, but she felt quite dizzy, quite drunk. It must have
been the spring. 18. It is important not to miss classes. 19. It was then that he
made his famous discovery. 20. He took the pass through the fields: it was
pleasanter than the road.