1)1.Jane will leave for London in May.
2.Jane is going to leave for London in May.
3.Jane is leaving for London in May.
2)1.My mother friends will move to another town next month.
2.My mother friends are going to move to another town next month.
3.My mother friends are moving to another town next month.
3)1.I will help about the house on Sunday.
2.I am going to help about the house on Sunday.
3.I am helping about the house on Sunday.
4)1.Mike hopes his friends will come to see him on his birthday.
2.Mike hopes his friends are going to come to see him on his birthday.
3.Mike hopes his friends are coming to see him on his birthday.