The eggs were a bad smell. Nobody wanted to eat anything. .
Perseverance is a kind of quality--- and that is _____ it takes to do anything well.
He asked several questions_______ the professor who gave us a lecture_______the balance of nature.
We thought of selling this old furniture, but we’ve decided to _____ it. It might be valuable.
I’m not very good at playing chess. He often _______ me.
Mrs. Black doesn’t believe her son is able to design a digital camera, ________?