Problem: How does the sentence end?

the doctor prescribed drugs for the Pericarditis infection Paul was suffering from that  but the 
Answer: infection was too strong.

Problem: How does the sentence end?

Mary had an easier time cleaning LEGOs than Patricia because 
Answer: Mary enjoyed cleaning small pieces.

Problem: How does the sentence end?

The shrimp didn't cook well on the grill, while the steak was perfect, since the 
Answer: shrimp was an improper food for this cooking method.

Problem: How does the sentence end?

Making new friends wasn't easy for Adam while it came easily to Donald because 
Answer:
Adam was painfully shy.