[Q]: How does the sentence end?

It took the food ten additional minutes to cook over the flame because the 

[A]: flame is little.


[Q]: How does the sentence end?

Elena was a preschool teacher while Felicia was a college professor, so 

[A]: Elena taught kids.


[Q]: How does the sentence end?

Benjamin demanded that Samuel clean the dirty floor with a mop because 

[A]:
Samuel accidentally dropped dirt there.