Viết lại câu cho phù hợp

1. He was the last emperor who ruled both parts of the empire.
He                                                                               
2. Maxicorp were the only company which replied my letter
Maxicorp ___________________________________________
3. The equipment which belongs to the club is insured 
The equipment ______________________________________
4. The trees which were planted last week are growing well 
The trees ___________________________________________________