补全对话
阅读下面的对话，根据对话情景，从所给的A—G中选择合适的选项补全对话，使对话意思完整。
Tom: Hi, Amy.
Amy: Hi, Tom.    What’s wrong with you?
Tom: I have a stomach ache.
Amy: What did you eat for lunch?
Tom:   
Amy: I see. Maybe it is caused by them.
Tom:    
Amy: Do you often just have snacks for lunch?
Tom: Yes, very often.
Amy: Oh!         Snacks are bad for health.
Tom: I know that.        But I really enjoy them.
Amy: Anyway, you should try to eat less.
Tom: You’re right. I’ll try.