Fill in am, is or are.Помогите пожалуйста !The sky is very

Fill in am, is or are.Помогите пожалуйста !
The sky is very blue today. 2. I ___ not tired. 3. This shelf __very heavy.

4. These shelves ___ very heavy. 5. The child ___ asleep. 6. Look ! This_

Mabel. 7. I ___ cold. Can you shut the window, please? 8. The castle ___ one thousand

years old. 9. My brother and I ___ good tennis players. 10. Amy ___ at home but her

parents ___ in church, 11.I___ a student. 12. My sister ___ an archeologist.