Вставьте артикль, где необходимо артикли a, an, the или нулевой

1. This is … pen. That is … pencil. It is my … pencil.
2. Is this your … pencil? -- No, it isn't my … pencil, it is my sister's … pencil.
3. It's … cat. Its … tail is long and bushy. It's Mike's … cat.
4. I have … sister. My … sister is … engineer. My sister's … husband is … doctor.
5. They have got two … children. This is … girl. This … girl is their … daughter. Their daughter's … name is Nelly.
6. That is … boy. That … boy is her … brother. Her brother's … name is Nick.
7. This is our … flat.
8. We have got … car. Our … car is not very expensive but reliable.
9. I have no … pet. I don't have … friend
10. My granny has got… a problem with her cat. She has no … idea what to do.
11.I have … friend. His … name is Mike, My … friend is very good.