2)You need a new mobile phone, and you don't know which model to buy.


+ I need a new mobile phone and I don't know which model to buy. Do you know any good mobile phone?
- Yes, I know. I think you should buy Note 5 . Because  the phone's screen very large and also it's thin and light. You can buy Note 5. But you musn't buy Note 7. Because, one time Note 7 series can exploded in a market.
+ It is a crazy idea. Because if the Note 7 series can explode so as the Note 5 can! I don't want buy Note 5.
- You know.