I used the bucket of water to wash the car until the 
OPTIONS:
- bucket was clean.
- car was clean.
car was clean.

After eating dinner, Leslie offered a piece of gum to Kevin because 
OPTIONS:
- Leslie had eaten a lot of garlic.
- Kevin had eaten a lot of garlic.
Kevin had eaten a lot of garlic.

Writing the book was easy, but the essay turned out to be a different matter, because the material in the 
OPTIONS:
- book was so simple to communicate.
- essay was so simple to communicate.
book was so simple to communicate.