2. Put the verb to be into the correct form of the Present Simple.( с переводом)

1. My friend's wife (to be) a doctor.
2. Moscow (to be) the capital of our country.
3. Orlov's children (to be) at the lesson now.
4. They (not to be) at school now, they (to be) at home.
5. These boys (to be) your children?