Problem: How does the sentence end?

Cars were zooming by while Angela ran into traffic to save Erin who had been hit. 
Answer: Erin was injured.

Problem: How does the sentence end?

The grout around the sink was coming off, so Jennifer asked Jessica how to regrout the sink. 
Answer: Jessica delivered the explanation carefully.

Problem: How does the sentence end?

The upholstery on the couch lasted longer than the one on the chair although the one on the 
Answer: chair was done by a professional.

Problem: How does the sentence end?

The garden of Derrick looks shoddy compared to Robert's, because 
Answer:
Robert is a gardener by trade.