Ответ:

{4}

1. ... have been walking ...

2. I have been talking ...

3. ... has been he learning ...

4. It has been raining ...

5. It has not been snowing ...

{5}

1.   ... , are you ?

2.  ... , isn't she ?

3.  ... , didn't they ?

4.  ... , didn't they ?

5.  ... , aren't we ?

Объяснение: