三、根据上下文和首字母完成对话。
A：Hi，Lucy! Let me s you a.
B：You're so nice，Chen Fan.
A：Let's go to the p first. There's a s. Do you like playing on it?
B：Yes. It's fun.
A：This is our teaching building. It has five floors. There's a c room on the first floor.
B：Cool! Is there a l in our school?
A：Yes. It's on the t floor. It's big and q.
B：W is the m room?
A：It's o the s floor.

三、show; around; playground; swing; computer; library; third; quiet; Where; music; on; second

四、给下列句子重新排序，组成通顺的对话。
1. A. Let me help you. Give me some of your books，please.
B. Oh，you have so many books. Are you OK?
C. You're welcome. We should help each other at school.
D. Yes，but they are heavy.
E. Here you are. Thank you.

2. A. Thanks. Is that the library?
B. Do you have a music room?
C. No，it isn't. It's the computer room.
D. Welcome to our school.
E. Yes，we do. It's on the third floor. This way，please.

四、1. B D A E C 解析：B（感叹对方书多并询问状态）开启对话；D（回应“没问题但书很重”）承接 B 的询问；A（主动提出帮忙拿书）回应“书重”的情况；E（递书并道谢）回应帮忙的提议；C（回应感谢并说明互助的道理）收尾。
2. D A C B E 解析：开启对话，以“欢迎+引导”切入，符合校园参观的场景开头，是自然的开场白；先回应上一句的“欢迎与引导”（Thanks.），再顺势询问校园设施（Is that the library?），符合“感谢→提问”的对话流程，承接自然；直接回应上一句的一般疑问句（Is that...?），用“No，it isn’t.”否定，再补充说明实际场所（computer room），问答对应紧密；上一句完成了“图书馆”的疑问解答，此处继续询问另一项校园设施（music room），保持“参观→询问设施”的核心话题一致，过渡流畅；回应上一句的“音乐教室”提问（Yes，we do.），补充位置信息（on the third floor），并以“This way，please.”承接开头的“引导”动作，收尾并推进场景，对话闭环。