Напишите предложения в past Indefinite и Future indefinite1) you must do

1) you had to do it. You will have to do it.
2) you had to learn this rule. You will have to learn this rule nextweek
3) you could speak to him about it. You will be able to speak to him about it
4) she could help you. She will be able to help you.
5) we had to go home. We will have to go home
6) Who could teach him business? Who will be able to teach him business?