Мне нужно переделать предложения в Passive Voice.
1) Mike showed the letter to his mother.
2)Sabby locks the gate every night.
3)They will hold interviews in September.
4)The Smiths have sold their house this month.
6)When he entered the room they were interviewing the last student.

The letter was shown to his mother by Mike. The gate is locked by Sabby every night. Interviews will be held by them in September. Their house has been sold by Smiths this month. last student was being interviewed by them, when he entered the room