题目内容：

选用所给句子完成对话。

A: Have you ever heard about a fund-raising event called Oxfam-trailwalker?

B: Yes.       1

A: Yes, it is. I am thinking of joining it. It’s a good chance to learn about working together.

B:       2

A: People over 18 years old.      3

B: It’s a difficult walk but I’m really interested in it. Do you think I can join the walk?

A:        4        We can be in the same team.

B: Oh,         5      Let’s find another two members.

A.    that would be great. B.     Yes, sure. C.     They have to finish the walk within 48 hours. D.    Who can join the Trailwalker? E.     Is it organized by Oxfam Hong Kong? F.     What do you think about it?