Complete the sentences with one of the forms of the verb

Complete the sentences with one of the forms of the verb to be: am, is, are.

1. These sportsmen_______ very good.
2. The book ____ old, but it ___very interesting.
3. I ____ a student of economic department.
4. That bag ___not mine, it ____hers.
5. Those cars ____ beautiful and powerful.
6. The children _____ not hungry, but they ____ tired