Story needs to be completed:
Dennis played the guitar while Matthew played the piano, so

My choice:
Dennis plucked the strings when practicing.

Story needs to be completed:
Working on the farm let Patricia provide for their family while Betty went to university.

My choice:
Betty is a student.

Story needs to be completed:
The courses that my sister took were more involved than the programs I had, because the

My choice:
courses were harder.

Story needs to be completed:
As part of the deal, Jeffrey got 50% of Donald 's earnings.

My choice:
Donald was a naive type.