---Is there ___ you don't understand?---I think ___ is quite clear.Thank you.

—He got his first book published. It turned out to be a bestseller. —When was _____? —_____ was in 2000 when he was still in college. 

---How many eggs are still there in the fridge, Bill? --_____.

___ makes me sick that she thinks so highly of herself.

They are good friends. _______ is no wonder that they know each other so well.