[Q]: How does the sentence end?

The couple bought a new bed for their room, but had to return it because the

[A]: bed was too large.

[Q]: How does the sentence end?

Justin was a natural optimist but not Neil.

[A]: Justin found expressing gratitude came easily.

[Q]: How does the sentence end?

Nick did not have a compost pile like Randy because

[A]:
Nick was ignorant about environmental problems.