Ответ:
1. It is importan to do this job.
2. It is necessay to learn English.
3. It is unforgivable to kill people.
4. It is dangerous to kill people.
5. It is impolite to interrupt people.
6. It is very painful to dress a wound.
7. It is your duty to attend your classes.
8.It’s a pleasure that I can see you again.. (Так и будет)
9. It is very amusing to watch a comedy.
10. It is useless to rush through a book.
11. It was a rare treat to go with him to the gallery.
12. It seemed a proper and natural thing to do it.
13. It would be an absurd thing to take him seriously