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1. he is
2. they aren't
3. I am
4. he isn't
5. they are
6. she isn't
7. I am not
8. he is
9. she isn't
10. it is

ex 2

1. is Anna typing; she's speaking
2. is it getting cold; is getting
3. are you looking through ; am writing
4. are ... mending; they are
5. are ... resting ; we aren't; are spending
6. is ... playing ; he is