Complete the questions with the correct form of the verbs in brackets.
Jason: Hi, Mark. What are you doing (do)?
Mark: I'm cooking dinner. Can you help me. This is really difficult.
Jason: OK. ____ your mum ____ (work) today?
Mark: Yes, she is. She's working late. ____ your mum ____ (work)?
Jason: Yes, she does. She works in a bank. That's why I know how to cool. Right. Let's start.