Problem: How does the sentence end?

Matthew was a considerate co-worker but Christopher was not, because 
Answer: Christopher often microwaved tilapia in the office kitchen.

Problem: How does the sentence end?

Justin had more say so in the club than Joseph did although 
Answer: Joseph was president of the club.

Problem: How does the sentence end?

Mary preferred to plant flowers in the garden over the planter because the 
Answer: garden was easier to weed.

Problem: How does the sentence end?

Adam felt that Ian was the romantic in their relationship. 
Answer:
Adam had trouble being creative to show love.