Помогите с английским пожалуйста! 9класс!

Choose the correct option.

- Amanda, do you know (is Ruth going,if
Ruth is going,is) to have a birthday party?
- Yes. It is next Saturday.
(Has she invited,She has invited,She invited you?
- Not yet, but I hope she (invite,invited,will invite) me later. And you?
- Yes, but I (can't,am not able,don't manage to go. My parents are planning( have, having,to have a family dinner that day. So I will (must,have to,have) stay at home.