题目内容：

补全对话

( At the beginning of the trip to Mount Hood)

J=Jack  L=Lynn  S=Sue

J: OK, everybody. I’m very glad to lead the team. Are we all ready?

L: Wait! Has everyone put on sunscreen?

S: Oh, dear! ___1___

L: Here you are. Use mine. Put on some quickly. It can stop the sun from hurting your skin.

S: Thank you.

J: ___2__ especially because this is Sue and Lynn's first time to have such a trip.

L: All right, Jack.

J: Rule number one, don't walk by yourself. We don't all have to stay together, but don't go somewhere by yourself.

S: No problem. ___3____

J: OK. And rule number two, keep the mountain beautiful. ___4_ Don't litter around. We want others to be able to enjoy this beautiful place, too.

L: I know what you mean. ___5____.

J: Well, those are the two most important rules. If I think of anything else, I'll tell you on the way. So let's go!

All: Yeah! All right! Let's go!

A．Don't pick the flowers.

B．We all know we are a team.

C．I've put on some.

D．I forget.

E. And I have to give you a couple of rules before we start,

F. It also makes me sad when I see people have littered all over.