Problem: How does the sentence end?

Megan was slimmer than Sarah because 
Answer: Megan took supplements in order to be healthier and fit.

Problem: How does the sentence end?

That was a very interesting thought to put the desk on the den but the 
Answer: den was too small.

Problem: How does the sentence end?

Samuel could blow bigger bubbles with gum compared to Nick because 
Answer: Samuel chews gum everyday.

Problem: How does the sentence end?

Jennifer came limping into work but not Rebecca because 
Answer:
Jennifer had worked out too hard.