Problem: How does the sentence end?

Christine asked Erin to read the blog they had just finished, because 
Answer: Christine was insecure about it.

Problem: How does the sentence end?

I proposed that we did a trade instead of a loan to get what we needed since trade the 
Answer: loan is unfair.

Problem: How does the sentence end?

Bill tired to light a candle during the wind storm, but the 
Answer: wind was too strong.

Problem: How does the sentence end?

Sarah wants to determine her baby's blood type so she goes to Rachel, because 
Answer:
Sarah wants to know it.