Choose the correct options

Read the sentences and choose the correct articles.

1. I have
   [a|an]
   cat and
   [a|an] dog.
2. Do you have
   [a|an] pen? I forgot mine.
3. Is it
   [a|an] umbrella?
4. I have
   [a|an] atlas and
   [a|an] notebook.
5. He doesn't have
   [a|an] rubber. Lend him one, please.
6. It is
   [a|an] amazing day.
7. Give me
   [a|an] piece of paper, please.