Put the given verbs in the correct passive form

1. — They are building a new concert hall in town.

   — I know. It (open)[ ] by the mayor next month.

2. — (the walls/paint)[ ] yet?

   — No, they (paint)[ ] tomorrow.

3. — We (amaze)[ ] by all the fossils in the museum yesterday.

   — I know. They (collect)[ ] over the past 50 years.

4. — That's a beautiful statue.

   — Yes. It (sculpt)[ ] by a local artist last year.