Robert is much better at sewing than Christopher since 
OPTIONS:
- Robert is well-trained and did an apprenticeship under a known seamstress.
- Christopher is well-trained and did an apprenticeship under a known seamstress.
Robert is well-trained and did an apprenticeship under a known seamstress.

Sarah's brother was being obnoxious and threw his ball at a vase, so their mother confiscated the 
OPTIONS:
- ball .
- vase .
ball .

As the walls began to cave in on Joseph, he thanked Craig who had sold him the house because 
OPTIONS:
- Joseph had narrowly escaped due to his advice.
- Craig had narrowly escaped due to his advice.
Joseph had narrowly escaped due to his advice.