[Q]: How does the sentence end?

The teachers tried to fit all the books into the schools but the 

[A]: schools were too small.


[Q]: How does the sentence end?

Justin helped Kyle in the struggle of finally getting his private pilot's license and 

[A]: Kyle was grateful to him.


[Q]: How does the sentence end?

Because Samuel bought a new computer while Ian bought a used one, the computer of 

[A]:
Ian was slower and less up to date.