1.

 Tom is inviting Anna to go out, but she can't because ...

   she has to finish a report tomorrow.
   she is going to work late tonight. 

2.

Anna isn't free tomorrow night.

   True.
   False. 

3.

What is she going to do tomorrow night?

   She's going to finish a report.
   She's not going to do anything special.

4.

What is Tom's plan for tomorrow?

  Going to see a musical.
  Buying the tickets. 

5.

Anna wants to pay for the tickets because ...

  it is her turn to pay.
  she loves musical shows.