пожалуйста помогите сделать задание?

1.There are some new pupils in our group.
2. There is no book on the table.
3. There were many old houses in our street.
4 .There are 4 seasons in a year.
5 . There will be a conference next week.
6 . There are many large cities in our country.
7 .There was nobody in the room.
8 . There are 7 days in week.
9. There is something on the shelf.
10 . There are many places of interest in London.
11. There are many beautiful flowers in our garden.
12. There was much work last week.

They divide the federal government into 3 branches.