Add s or '
Martha children are moving to Italy next week.
Martha's children are moving to Italy next week.
Let's go to the hairdresser on Friday.
Let's go to the hairdresser's on Friday.
The problem is I can't remember those men's/mens' names.
The problem is I can't remember those men's names.
My cousins names are Jeff and Lara.
My cousins' names are Jeff and Lara.
Who's washbag is this?
Whose washbag is this?
I need to go to Peters'/Peter's after work.
I need to go to Peter's after work.
These books are Mr Jones.
These books are Mr Jones's. OR These books are Mr Jones'.
A workmate of he is passionate about his job.
A workmate of his is passionate about his job.
Those are the students' desks / the student's desk.
Those are the students' desks.
People lives depend on this.
People's lives depend on this.
Their dream is to have a house of they own.
Their dream is to have a house of their own.
The teacher answered some questions at the class's end / the end of the class.
The teacher answered some questions at the end of the class.
Joanna and Frank new house is very spacious.
Joanna and Frank's new house is very spacious.
Childrens' creativity should be encouraged.
Children's creativity should be encouraged.
That impressive car of Noah / That impressive car of his is very expensive.
That impressive car of his is very expensive.