Deside if the speaker in these situations is sure or not

Deside if the speaker in these situations is sure or not sure.Write ll / wont /might/ or might not.
1. A: Im going to Disneyland in Paris next week.
B: Oh,you ..... love it. I went there last year and it was wonderful.
2. A: Are you coming to the party tonight?
B: Actually,I ..... . I want to, but I have to get up early tomorrow.Ask me again later.
3. A:Do you know where youre going for your holidays next year?
B: We ..... go to South Africa. We havent really decided yet, thougt.
4. A: Can I have the llast piece of pizza?
B: If you do, there ...... be any left for your brother!