What might (or will) would he buy bought?

Tom has been gone going shopping for a while and is about to come back (or return home). Tom's kids Jack and Susan were was waiting for him at home.

"What do you think he will buy for us？“ asked Jack.
"I think he may (or might) buy us some books" answered Susan.
"No, I think he will buy us snacks" Jack replied (in disagreement) disagreed.
"Let's bet on it!" challenged Susan.
"OK!"

A while later Tom came back with some books for kids (or children's books).

Susan (or delightfully could go better here) reported to her father delightfully about their bet:
"I thought you might (or would)  buy bought some books for us but Jack thought you would buy must bought snacks, so we made a bet and now it turned out (that is optional and could go here) I won!"

What would he bought buy?

Tom has been going shopping for a while and was about to go back. Tom's kids, Jack and Susan was were waiting for him at home.

"What do you think he will buy for us？“ asked Jack.
"I think he may buy us some books" answered Susan.
"No, I think he will buy us snacks" Jack disagreed.
"Let's bet on it!" challenged Susan.
"OK!"

A while later Tom came back with some books for kids.

Susan reported to her father delightfully about their bet:
"I thought you might have bought some books for us but Jack thought you must have bought snacks, so we made a bet and now it turned out I won!"