From Twitter:
A: __ ? I saw a movie on #GlobalWarming; scientists say we shouldn’t idle our engines. Each car matters. __ ?
B: Oh, come on! How much damage can one car do?
A: Many folks do it; the carbon adds up.
B: Pft.
A: Be responsible!
① say
② did you know that
③ you know what
④ listen
Answers And Explanation
You know what? You know what? (Answer Choice 3) means, “Do you want to know something,” and what follows after this expression is the new information; in this case: I saw a movie on Global Warming.
Each car matters.
Did you know that? (Answer Choice 2) means “did you know that fact that I just told you about?”