[Q]: How does the sentence end?

On a sunny day in the park, Betty told Emily 
OPTIONS:
- Betty hoped not to encounter a dog.
- Emily hoped not to encounter a dog.

[A]: Betty hoped not to encounter a dog.
QUES: Continue writing.

When touring abroad, it's better to visit the caves instead of the museums because the 

OPTIONS:
- museums are much more interesting.
- caves are much more interesting.
+++++++++
ANS: caves are much more interesting.
Problem: How does the sentence end?

Sarah had a sweater made of an old fabric and she also bought a new jacket. The 
OPTIONS:
- jacket she wore to work was old.
- sweater she wore to work was old.
Answer: sweater she wore to work was old.
sentence: the funny movements were caused by the little energy within him during the dance , the  OPTIONS:
- energy was limited.
- movements was limited.
complete: energy was limited.
The ride on the train made her head ache, but not the car, since the 
OPTIONS:
- train was quieter.
- car was quieter.
car was quieter.
Problem: Continue the following story.

Laura showed Megan the easiest way to wash her rubber bath mats since 
OPTIONS:
- Laura knew she was having a hard time getting them clean.
- Megan knew she was having a hard time getting them clean.
Here's how I want to continue it:
Laura knew she was having a hard time getting them clean.