Use the passive constructions to express the same 1) They will post the letters when the ship arrives at the port 2)

1. The letters will be posted when the ship arrives at the port.

2. Videos like this are bought everywhere.

3. The flowers are watered every day.

4. The window was broken last night.

5. Potatoes were brought to Spain from South America by  Christopher Columbus.

6. Cheese is made from milk.

7. The battle was fought in 1941.

8. Australia was explored in the 18th century by Europeans.