Problem: How does the sentence end?

I wanted to stop the gas from leaking by using a sealant but the force of the
Answer: gas is too strong.

Problem: How does the sentence end?

The bruise on my leg was lighter than the one on my arm since I fell harder on the
Answer: arm .

Problem: How does the sentence end?

Christopher liked a calmer dog while Donald favored an energetic dog.
Answer: Donald rescued a young puppy dog from the animal shelter.

Problem: How does the sentence end?

Rebecca had a severe bone disease but Erin did not, so
Answer:
Rebecca had to constantly receive medical attention for the disease.