You will work a lot. (you familiar)
Trabajarás mucho.
They will make food.
Ellos harán comida.
He will go
irá
He will tell me tomorrow.
Él me dirá mañana.
I will dance with you.
Bailaré contigo.
I will leave at 8 in the morning.
Saldré a las ocho de la mañana.
She will do her homework.
Ella hará su tarea.
She will know the truth tomorrow. (la verdad-truth)
Ella sabrá la verdad mañana.
I will see you tomorrow.
Yo te veré mañana.
They will have fun! (divertirse)
Ellos se divertirán
She will see me.
Ella me verá.
you guys will win (you all familiar)
ganaréis
They will run
correrán
I will write the letter.
Escribiré la carta.
She will put the book under the desk.
Ella pondrá el libro debajo del pupitre.