Réponse :
Bonjour en espérant que ça t'aidera ;)
Explications :
1 ) an old bone was shown to the students by the professor
2) a computer was bought by steven
3) Je n'ai pas trouvé désolée
4) mid November the mountains were covered with snow
6) money was stolen by someone in her handbag
7) in a park a alive old lady was found by the police
8) guests are welcomed by children
9) the windows was shuted down by my parents before the storm
10) tickets will not be sent by us
Je te souhaite une belle journée