[Q]: How does the sentence end?

Mary did not understand computers but Betty was a computer nerd, so 
OPTIONS:
- Mary was unable to fix it when it broke.
- Betty was unable to fix it when it broke.

[A]: Mary was unable to fix it when it broke.
QUES: Continue writing.

He tried to cut the slate with a knife but it didn't work because the 

OPTIONS:
- slate was so dull.
- knife was so dull.
+++++++++
ANS: knife was so dull.
Problem: How does the sentence end?

The boy tried to record the video on his phone but the 
OPTIONS:
- video was too large.
- phone was too large.
Answer: video was too large.
sentence: The shopper took the bags from the cart and put them in the trunk of his car until the  OPTIONS:
- trunk was empty.
- cart was empty.
complete: cart was empty.
Jeffrey hired Michael to clean their floors because 
OPTIONS:
- Jeffrey was going on a long vacation.
- Michael was going on a long vacation.
Jeffrey was going on a long vacation.
Problem: Continue the following story.

Emily told Maria that she was going to be more thoughtful this new year.  
OPTIONS:
- Emily was skeptical.
- Maria was skeptical.
Here's how I want to continue it:
Maria was skeptical.