【湖南省长沙市2015年中考英语试题】 情景交际阅读下面的对话，根据上下文补全对话内容。
难度：★
A: Hey , Frank, ________________________?
B: Pretty good.
A: Did you have fun last weekend?
B: _______________. I went to the old people’s house with my friends and have a good time
A: Wow, What did you do there?
B: We helped the old clean their houses and chatted with them. How about you?
A: I just read a science magazine.
B: Oh, really ? _____________________?
A: Hum… it is about the main cause of smog (雾霭) and ways to beat it.
B：Great! But ______________________?
A: We can live a greener life by using cleaner energy to solve the problem, I think.
B: You do?
A: Yes, natural gas is a good choice. By the way，_________________________?
B: It’s 7:45 now.
A: Oh, God. Hurry up or we’ll be late.
B: OK.