1.I'msorry,butit'sunfortunatethatIwon'tbeabletoattendthepartytomorrow.2.It'ssuchapitythatshemissedherflightandcouldn'tjoinusfortheweekendgetaway.3.I'mdisappointedtohearthattheconcertwascancelledduetob
1. I'm sorry, but it's unfortunate that I won't be able to attend the party tomorrow.
2. It's such a pity that she missed her flight and couldn't join us for the weekend getaway.
3. I'm disappointed to hear that the concert was cancelled due to bad weather.
4. It's regrettable that we didn't win the game despite all our efforts.
5. I feel sorry that I accidentally broke your favorite mug.