Ответ:

ex1.

1. I am not having fun

2. Mum and Dad are not working today

3. My brother isn't reading a magazine at the moment

4. The boys are not playing computer games

5. It is not raining today

6. Dad isn't washing the car in the garden

7. The baby isn't crying

ex2.

1. I am not playing football at the moment

2. I am doing my homework now

3. My dad is watching TV

4. My mum is cooking in the kitchen

5. It is not raining now

6. I am listening to music

7. I am not wearing shorts at the moment

8. I am sitting at my desk