[Q]: How does the sentence end?

Betty took care of Laura's hedgehog for a week because 

[A]: Betty wanted to be helpful.


[Q]: How does the sentence end?

I wanted to take my sports car to my soccer game but my gear wouldn't fit in the trunk, the 

[A]: trunk was too small.


[Q]: How does the sentence end?

Donald wanted to take a nap but Nelson didn't so 

[A]:
Donald had to stay up because they are nice.