请把把下列句子改为被动态,其中第7—10句必须保持主句的主语和谓语动词不变.

请把把下列句子改为被动态,其中第7—10句必须保持主句的主语和谓语动词不变.
1.Is he watering the flowers?
2.Are they going to pull down the house?
3.They are bound to find it out.
4.You’ll have to write out the names clearly.
5.We should deal with the second item on the agenda right away.
6.How many people is he going to invite to the party?
7.I appreciate your inviting my son to your party.
8.We hope that they would help us in doing the research.
9.We appreciate your inviting us to your party.
10.The police believe that they will solve the crime soon.