Dennis helped Derrick replace his broken lawn mower blade because 
OPTIONS:
- Dennis was an experienced mechanic.
- Derrick was an experienced mechanic.
Dennis was an experienced mechanic.

I put all my coins in a piggy bank instead of a coin purse because the 
OPTIONS:
- coin purse was too small.
- piggy bank was too small.
coin purse was too small.

Natalie asked for Angela's help cleaning up the blood stains because 
OPTIONS:
- Natalie did not want to get caught.
- Angela did not want to get caught.
Natalie did not want to get caught.