Rachel preferred almond milk and Betty liked dairy milk better, because 
OPTIONS:
- Rachel was allergic to lactose.
- Betty was allergic to lactose.
Rachel was allergic to lactose.

Carrie was training Emily to be a ventriloquist, and 
OPTIONS:
- Carrie had been teaching ventriloquism for a very long time.
- Emily had been teaching ventriloquism for a very long time.
Carrie had been teaching ventriloquism for a very long time.

The whistle was blown over and over again but the man in the lake could only hear the splatter of the water because the 
OPTIONS:
- splatter is farther.
- whistle is farther.
whistle is farther.