A: Hi Penny! Are you ready to watching film with your friend?

P: Hi Andi! Yes, I am redy. But by the way what are you doing?, You look so serious

A: I’m making my Science Project. I have to do this project because I don’t want get bad score for Science. But it’s so difficult

P: Oh come on, you can do this. Where’s your fighting spirit?, I believe you can do this project. I can help you

A: But, how about the movie? You will mess it.

P: Oh that’s easy. I can tell to my friend that I can join because I want to help my brother about his project

A: Are you certain about that?

P: I’m very certain, you are my brother right?

A: That’s a very kind of you. Thanks a million!

P: My Pleasure
Contoh dialog certainty
   topik sekolah
wahyu : Hi, Kin! Good morning!
 KinnBR  : Hello, Mis! Good morning!
 wahyu : What do you think if we decorate our class?
KinnBR  : That’s good idea, make a wall magazine I think.
wahyu : Are you sure?
KinnBR : Yes, certainly. Our class look nice if there is a wall magazine.
wahyu : Well it is possible I suppose it but I doubt it.
KinnBR  : So, what do you think? 
wahyu: Why don’t we buy flowers for our class?

KinnBR  : Oh, I don’t think so. It is expensive.
wahyu : You are right, but we can collect money.
KinnBR  : I doubt it. I’m broke now. I don’t think can get enough money.

wahyu : Yeah, come on. I can lend you the money if you want.
 KinnBR  : Really?
wahyu : Of course.
KinnBR  : Thank you very much.
wahyu : Don’t mention it