1. Jack's job as a reporter started in 2010.
=> Jack has ..............................................
2. It's thirty years since my mother began her career as a teacher.
=> My mother has ........................................................................
3. He was chosen for the football school team two months ago.
=> He has ...................................................................................
4. You're late again. You've already been late once this week.
=> It's the second time ...........................................................
5. No one has challenged his authority before.
=> This is the first time ...................................
6. I don't know these men.
=> I have not ....................