Problem: How does the sentence end?

Shelly touched the bruise but was careful not to touch the sore since the 
Answer: bruise was a closed wound.

Problem: How does the sentence end?

So 
Answer: Randy was worried because Randy forgot to study for the upcoming test and Robert studied.

Problem: How does the sentence end?

Emily asked Natalie to help her choose the best place to have her hair done, although 
Answer: Emily was actually quite knowledgeable about salons.

Problem: How does the sentence end?

Erin gave Kayla a scrap of meat from her plate because that was all 
Answer:
Erin had.