My friend, Tom, left New York in 1976 and since then

Over the past decades,sea ice___________in the Arctic as a result of global warming.[ ]

Would you like to go to the amusement park—-If Jack does, __________.

puzzlement, the writtenrecord of our conversation doesn’t __________ what was actuallysaid

_________ the lecturer more clearly, I arrived early and chose a front seat.