将十个限制性定语从句转化成分词短语 在线等

1
原句： I lost the book which was written by Moyan.
改编后：I lost the book written by Moyan.
2
原句：The house which is being painted now belongs to my aunt.
改编后：The house being painted now belongs to my aunt.
3
原句：The meeting which will be held next week is very important.
改编后：The meeting to be held next week is very important.
4
原句：The car which belongs to my father is being repaired.
改编后：The car belonging to my father is being repaired.
5
原句：The building which was built last year caught fire last night.
改编后：The building built last year caught fire last night.
6
原句：The earthquake which caused thousands of deaths did much damage to the city.
改编后：The earthquake causing thousands of deaths did much damage to the city.
7
原句：There were many people who flew kites in the park yesterday.
改编后：There were many people flying kites in the park yesterday.
8
The machine which was bought last week doesn't work now.
The machine bought last week doesn't work now.
9
The girl who is crying now is from Class one.
The girl crying now is from Class one.
10
There will be many students attending the sports meeting which will be held next month.
There will be many students attending the sports meeting to be held next month.

为什么没有问题？