When it comes to chopping, Mary is much quicker than Megan because 
OPTIONS:
- Mary is a cook.
- Megan is a cook.
Mary is a cook.

The scientist put blood in the beaker instead of the test tube, because the 
OPTIONS:
- test tube was easier to clean.
- beaker was easier to clean.
beaker was easier to clean.

Patricia asked Betty if she had lowered the shades before leaving the house because 
OPTIONS:
- Patricia wanted to know.
- Betty wanted to know.
Patricia wanted to know.