Past simple passive (was/were + past participle)

Past simple passive (was/were + past participle)

1. The song Yesterday was composed in 1965.
2. Buckingham Palace was built in 1703.
3. The royal wedding was watched by millions of people in 2011.
4. The children were saved by the firefighters last night.
5. My keys were found two days ago.
6. Their beds were not made this morning.