[Q]: How does the sentence end?

The books that I bought at the auction didn't fit on the shelves, because the 

[A]: books were too many.


[Q]: How does the sentence end?

While any child could play with the toys cars there was an age requirement established for playing with the marbles because the 

[A]: cars were safe.


[Q]: How does the sentence end?

Carving a pumpkin every Halloween is a must for Megan but not for Katrina because 

[A]:
Katrina hates to follow tradition.