Joel liked to play with Justin 's dog because it was so well-behaved. 
OPTIONS:
- Joel trained the dog well.
- Justin trained the dog well.
Justin trained the dog well.

I liked doing yoga on the mat more than on the floor because the 
OPTIONS:
- floor was hard.
- mat was hard.
floor was hard.

Victoria let Patricia go on a solitary walk and stayed home, although 
OPTIONS:
- Victoria wanted to stretch their legs.
- Patricia wanted to stretch their legs.
Patricia wanted to stretch their legs.