First, have a look at the verb forms in the sentences below. Pay attention to the way positive, negative sentences and questions are created.
– Positive
I’m having a meeting.
She is talking on the phone.
They‘re preparing a presentation.
– Negative
I am not listening to the radio.
He isn’t having lunch.
We aren’t talking about the new project.
– Questions
Are you driving now?
No, I‘m not.
Is he writing code?
Yes, he is.
What are they working on?
Who are you talking with?
Where is she going?