Problem: Cynthia asked Christine tips for dealing with osteoarthritis since they knew

My choice: Christine just went to see their doctor for the same problem.

Problem: Brian liked to imitate Donald when they came home because

My choice: Brian thought it was funny.

Problem: Katrina yelled at Elena because

My choice: Katrina saw muddy footprints all over the new white carpet.

Problem: Joel learned from Matthew how to sew a dress for school because

My choice:
Matthew was an expert.