Change the sentences Active to Passive, and Passive to Active

1. Did they sell many cars last year? -
2. The picture has been sold for $3,000 -
3. Bell didn't invent the television? -
4. Two pictures were stolen from the musem -
5. Sis anybody invite Helga to the party?

Change the senteces into Passive
1. They are building a new shopping center in our town
2. Someone was recording our conversation
3. They changed the hour of the departure
4. I don't clean my car very often