—If people make small changes, like taking buses instead of driving cars, it will make a big difference. —_____. Then the traffic will be much better. 

---Is Mr. Green really badly ill? ---        . He’s in the hospital.

---You look hungry. Would you like some bread? --- ______. I would like some hamburgers.

.---______ nationality are you, Jack? ----______.

--- I’m not good at singing, you know. --- ________! It’s just for fun.