Present Simple or Continuous?

Mary .... cooking.

Can you hear the birds? They ... .

Peter usually ... to school by bike.

Those children ... football. They seem to be really good at this sport.

My grandson ... me once a month.

They ... TV now.

Emma and I ... having dinner at the moment.

We ... our homework in the afternoons.

Sam usually ... breakfast for his kids.

My granny isn't at home. She... the shopping right now.