Помогите пожалуйста с английским

Замените подлежащее, выраженное существительным, личным местоимением.

Образец: My aunt is a teacher. She is a teacher.

1. This test is difficult.

2. These tests are easy.

3. That computer is modern.

4. Those computers are not new.

5. My brother is a doctor.

6. His sister is a student.

7. Nick and I are good friends.

8. Bob and Tom are their children.

9. Gene and Ann are at school.

10. His uncle is an artist.

1. It is difficult.2. They are easy.3. It is modern.4. They are not new.5.He is a doctor.6. She is a student.7. We are good friends.8. They are their children.9. They are at school.10. He is an artist.