—Where did you come across your old classmate Jane?—It was in the supermarket _________ she worked _________ I came across her.
Thank you for all your hard work last week. I don’t think we ____ it without you.
_______ he had not hurt his leg, John would have won the race.
If it were not for the fact that she_______sing, I would invite her to the party.
__________ fired, your health care and other benefits will not be immediately cut off.
—How’s your tour around the North Lake? Is it beautiful? —It ________ be, but it is now heavily polluted.