--- Could you mail these letters for me please?--- ____ letters? Your friends are going to be very happy to hear from you again.
—Were you surprised by the ending of the film?—No. I __________ the book, so I already knew the story.
Tom was about to close the window __________ his attention was caught by a bird.
Mary made coffee __________ her guests were finishing their meal.
One Friday, we were packing to leave for a weekend away __________ my daughter heard cries for help.
Because of the heavy traffic, it was already time for lunch break __________ she got to her office.