Passive Past Perfect - English learning exercises

Change the sentences into the Past Perfect Passive form.

They had invited the Browns. (Past Perfect Active)
The . (Passive)
They had washed the glasses. (Past Perfect Active)
. (Passive)
He had cleaned the room. (Past Perfect Active)
. (Passive)
They had informed mother. (Past Perfect Active)
. (Passive)
They had moved the table. (Past Perfect Active)
. (Passive)