i need use modal verbs (could have, should have, might have...) to complete this please
1. I__________________ (buy) bread but I didn't know we needed it.
2. We____________________ (not invite) so many people to our party! I'm worried that we won't have enough room for everyone.
3. He____________________ (start) saving money years ago!
4. The plane________________ (had) to make an emergency landing.
5. The story appeared on the evening news. It_________________ (been) a rather memorable day for the pilot.
thanks very much