Change these sentences into passive

Excercise:1change these sentences into passive
10. Someone   built a new house for the orphanage->......................................................
11.    Do people speak Spanish in Brazil?->.............................................................................................
12.Does your child eat that cake?->......................................................................................................
12.    Did  Lan do her exercises  yesterday?->..................................................................................................
13.    Did  you invite her to your birthday party?->.................................................................................
14.    they have cleaned the floor 
->................................................................................................
15.    Have you sold your house yet?->....................................................................................................
16.    you did your test this morning
>...................................................................................................
17.    Did they paint the windows yesterday?->.......................................................................................
18.     They have  cooked  the meal 
        ->............................................................................................
giúp vs ạ