3.
1) Will Russia win the next World Cup?
2) Will your brother be a teacher?
3) We won't eat anything, thanks.
4) I'll send Kate an e-mail every day.
5) You won't like that film.
6) Which book will you read next?
4.
1) won't understand
2) I'll write
3) won't become
4) I'll open
5) won't tell
6) I'll have
7) I'll go back
8) won't forget