课题:They're good for you.
A:Gogo,what are you eating?
B:I'm eating ice cream,cheese and some jelly.
A:You know,Gogo, you should eat more healthy food.
B:All food is good for me!
A:Not really.Too much ice cream isn't good for You don't eat enough"greens".
B:"Greens"?What are "greens"?
A:"Greens"are vegetables.See, a lot of vegetables aer green. They're good for you.
B:Yuck. I don't like those!
A:This is tasty, Gogo! Come on, eat plenty of' and you"ll be healthy!
B:OK.from now on,I"ll only eat green food!
A:Oh,Gogo.
不会说的别乱说