Passive voice

The workers gave the boss some flowers.

(a)  

The neighbour has told us the news.

(a)  

The old woman feeds the pigeons every day.

(a)  

They will pick up John at this office.

(a)  

The taxi driver drove us to the airport.

(a)  

My grandmother is baking a delicious cake.

(a)  

Where did they find the book?

(a)  

The police could arrest the bank robbers when they were cossing the border. (both parts must be transformed into passive)

(a)  

They say Margot Robbie is one the sexiest film stars in Hollywood.

(a)  

We should clean these windows before tomorrow.

(a)