Problem: How does the sentence end?

Mary bought a tank for her pet gecko to live in from the online store, but the
Answer: tank was too narrow.

Problem: How does the sentence end?

Matthew cooked a fancy pasta dinner for Neil last night because
Answer: Neil hates to cook.

Problem: How does the sentence end?

The bird nest is a lot higher than the doghouse because the
Answer: nest is in the tree.

Problem: How does the sentence end?

Erin watched Kayla prune their roses with great interest because
Answer:
Erin was a novice gardener.