Which sentence is punctuated correctly?
if a student isn't sure if they've joined the club or not he or she needs to
see coach baker so that he can check his list.
even though we waited in line all afternoon for tickets when we finally
reached the box office they were sold out.
after the dinner table had been cleaned off it was time for the family to
play board games.
given that school is cancelled tomorrow, will we still be expected to do our
homework?