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Ответ:

1. am

2. is

3. are

4. am

5. are

6. is

7. is

8. am

9. is

10. is

11. is

12. are

1 I'm not engineer

2 She isn't a doctor

3 It isn't true

4 This isn't my hand

5 I'm not sad

6 He isn't from Moscow