Story needs to be completed:
The clock on Jessica's phone was always a few minutes ahead of Elena's phone, so

My choice:
Jessica tended to arrive at their work office fifteen minutes early on weekday mornings.

Story needs to be completed:
Kayla found standing for a long time acceptable but Elena hated it, because

My choice:
Elena was very weak.

Story needs to be completed:
Victoria always came first or second when they participated in track but Mary usually came last because

My choice:
Victoria was a fast runner.

Story needs to be completed:
He preferred communicating with the phone over the computer, because the

My choice:
computer had a fuzzy signal.