Заполните пропуски соответствующими формами глагола to be в Present Simple, в

Заполните пропуски соответствующими формами глагола to be в Present Simple, в том числе в обороте there is/there are:

1) This ... an apple. The apple ... from our garden. There ... dwarf apple trees in our garden.
2)This ... a house. This house ... a circus. This house ... a circus for free. There ... clowns/ acrobats and trained animals at the circus.
3)There ... a fountain in the square in front of the circus.
4)There ... zebras. lions. tigers and elephants at public perfomance at the circus.
5)These ... bikers. The bikers ... in leather suits and gloves. They ... fearless. There ... two bikers among my friends.
6) There ... such a thing as the absolute truth in the world.
7)There ... a danger of asteroids approaching the Earth.
8)There .... more questions than answers in our discussion.