Read and choose the correct options

1. There
   [are|is]
   some pictures on the wall.
2. There is
   [a|an|some]
   elephant in the zoo.
3. There
   [is|are]
   a pencil in the pencil case.
4. There is
   [a|an|some]
   cola in the bottle.
5. There is
   [a|some|an]
   dog on the bed.