Ответ:

1. I'm playing my guitar.

2. I didn't go to the gym because I had a bad headache.

3. Could you make me a favour, please?

4. Jim hasn't a lot of money last year and now he's very rich.

5. My brother never do the washing-up.

Ответ:

1)playing

2)had

3)make

4)hasn't

5)do