Problem: How does the sentence end?

So 
Answer: Samantha wanted to keep their diet because Patricia wanted to lose weight while Samantha was fine.

Problem: How does the sentence end?

Megan's memory is a lot sharper than Rebecca's is due to 
Answer: Megan being a lot younger.

Problem: How does the sentence end?

I tried to place the grocery bag in the basket on the bike, but the 
Answer: bag was too large.

Problem: How does the sentence end?

So 
Answer:
Neil threw the yarn at the cat because Michael knew it wanted to play, while Neil just watched on.