1)

1. I was not asked for my opinion yesterday.
2. At the moment, the air is being polluted by smoke.
3. Right now, the paintings are not being sold in shops.
4. Our homework was not marked last week.
5. The galleries are visited by lots of tourists every year.

2)

1. Where is the Mona Lisa kept today?
2. Was the artist awarded the prize yesterday?
3. Who was given a Nobel Prize in 2002?
4. How were pictures painted in the twelfth century?
5. Were visitors charged any money yesterday?