Ребятки помогите пожалуйста ))Задание 10 (X )

I am going to write to Peter tomorrow evening.
We are going to read this book tommorow morning.
They are going to have a dictation tonight.
My friend is going to have one`s English tomorrow.
My friends are going to have one`s Franch tommorow.
My sister is going to speak to grandmother soon.
My sisters are going to speak to  mother soon.
These engineers are going to work in Ministery ini a week.
His son is going to do this exercises soon.
His sons are going to meet one`s friend next week (month)