[Q]: How does the sentence end?

It was more common for him to use headphones than earbuds, because the 
OPTIONS:
- earbuds were hard on his ears.
- headphones were hard on his ears.

[A]: earbuds were hard on his ears.
QUES: Continue writing.

Mary has accidentaly spilled a hot coffee on Erin's jeans, so 

OPTIONS:
- Mary accepts an offer to clean them.
- Erin accepts an offer to clean them.
+++++++++
ANS: Erin accepts an offer to clean them.
Problem: How does the sentence end?

Benjamin called Nick about necessary apartment renovations, because 
OPTIONS:
- Benjamin was the landlord of the apartment.
- Nick was the landlord of the apartment.
Answer: Nick was the landlord of the apartment.
sentence: Robert blamed Leslie for wearing down the batteries in the remote control car.  OPTIONS:
- Robert said it was an inconsiderate assumption.
- Leslie said it was an inconsiderate assumption.
complete: Leslie said it was an inconsiderate assumption.
In the morning, Samantha called Monica on the phone, but there was no answer. 
OPTIONS:
- Samantha was very busy.
- Monica was very busy.
Monica was very busy.
Problem: Continue the following story.

Robert had to borrow money from Logan because 
OPTIONS:
- Robert already paid all their credit card payments.
- Logan already paid all their credit card payments.
Here's how I want to continue it:
Logan already paid all their credit card payments.