Відповідь:

Пояснення:

1) She isn't reading a book now.

Is she reading a book now?

2)My friends aren't discussing this problem now.

Are my friends discussing this problem now.

3) I am not visiting my friends here.

Am I visiting my friends here?

4) The children weren't playing in the park all the day long yesterday.

Were the children playing in the park all the day long yesterday?

5) He wasn't waiting for you at 5 p.m.

Was he waiting for you at 5 p.m.?

6) John won't be studying music next year.

Will John be studying music next week?

7) Grace isn't going to the cinema with George.

Is Grace going to the cinema with George?

8) They won't be spending their weekend in the country.

Will they be spending their weekend in the country?