Ответ:
Task 3.
1)I will write a lot of letters-Letters will be writen by me.
2)She will not do the exercises-The exercises will not be done by her.
3)I will visit my grandma-Grandma will be visited by me.
4)They will not cook dinner-Dinner will not be cooked by them.
5)Will they help you?-Will you be helped by them?
Task 4.
1)We are writing a lot of letters-Letters are being written by us.
2)She is not doing the exercises-The exercises are not being done by her.
3)I am visiting my grandma-My grandma is being visited by me.
4)The are not cooking dinner-Dinner is not being cooked by them.
5)Are they helping you?-Are you being helped by them?
Объяснение: