tolong terjemahkan ke dalam bentuk pasive[pakai tense Pasive] (bahasa inggris) :')

1. this classroom is cleaned by Mr. Naryo everyday
2. my bicycle was stolen this night
3. this subject has been explained by our English teacher several times
4. that problem is being discussed by them
5. dinner is being prepared by my mother when I arrive home
6. these books will be sold by them
7. the classroom had been cleaned by Mr. Naryo when I entered the class this morning