Приведите примеры, когда тело можно считать материальной точкой

1. Hello, Mr... er ... Mr - I'm sorry, have forgotten your name.
2. News has just come in of an earthquake in Southern Mangrovia. According to the first reports the quake struck just after midnight last night.
3. Alice has bought a new car. - Really? Where did she get the money?
4. I have often wondered what he does for a living.
5. He was ill before Christmas, but he has been fine since then.
6. Things have been difficult since Sharon lost her job.
7. Paul has been keen on music since childhood.
8. Have you two met before? David, this is Ann.
9. Have you seen Jane by any chance? There's a letter for her.
10. This is the only occasion that I have seen wearing a tie.

1. 
Hello, Mr... er ... Mr - I'm sorry, forgot/have forgotten your
name.2. 
News just came in/has just come in of an earthquake in Southern Mangrovia. According to the first reports the
quake struck/has struck just after midnight last night.3. 
Alice bought/has
bought a new car. - Really? Where did she get/has she got the
money?4. 
I have often wondered/often wondered what he does for a living.5. 
He was/has been ill before Christmas, but he has been/ was fine
since then.6. 
Things have been/were difficult since Sharon has lost/ lost her job.7. 
Paul was/has been keen on music since childhood.8. 
Did you two meet/Have you two met before? David,
this is Ann.9. 
Did you see/Have you seen Jane by any chance? There's a
letter for her.10. This is the only occasion that
I have seen/saw him wearing a tie.