Problem: How does the sentence end?

Since 
Answer: Lawrence was taller, Lawrence was allowed to ride the rollercoaster and Christopher had to settle for watching from the sidelines.

Problem: How does the sentence end?

Craig but not Benjamin was hesitant to go in the pool because they were afraid of drowning. 
Answer: Benjamin was always a good swimmer.

Problem: How does the sentence end?

Elena ate crabe while Felicia ordered a steak because 
Answer: Felicia was allergic to any kind of seafood.

Problem: How does the sentence end?

Monica was at home sick with a cold, so Felicia bought some oranges to help 
Answer:
Monica get over the infection.