Problem: How does the sentence end?

Robert lent the book to Ian for the reason that
Answer: Robert already read the book.

Problem: How does the sentence end?

He carried the lamp out of the building and left the sofa at home. The
Answer: lamp was too light.

Problem: How does the sentence end?

Cynthia stayed the night at Amy's house because
Answer: Cynthia wanted to help her recover after the surgery.

Problem: How does the sentence end?

I tried to dye my wedding dress in the bathroom sink, but the
Answer:
dress ended up being too large.