Дайте краткие ответы на вопросы, следуя образцу, Образец: Is Kovalev present at the lesson? Yes, he is. No he is not. Is Tverskaya Sreet long? Was it cold last winter? Are yourfrend's sister beautiful?

1). Is Tverskaya Street long?

Yes, it is. No, it is not. (Present Simple. "Tverskaya Street" can be associated with "it").

2). Was it cold last winter?

Yes, it was. No, it was not. (Past Simple with the verb "to be).

3). Is your friend's sister beautiful? (Present Simple. "Your friend's sister" can be associated with "she").

Yes, she is. No, she is not.