내수입보기 | 수익출금 | 회원순위

① A : Are you sure about it?

   B : Yes, I am.

② A : Can you tell me who was late for class?

   B : Yes. It was Minsun.

③ A : Do you know who broke the window?

   B : Oh, really?

④ A : February has 29 days next year.

   B : Are you sure?

⑤ A : John won first prize in the contest.

   B : How do you know about that?