A Look and say(根据提示,编创对话)
a　　b　　c
S1: What made ... messy/dirty?
S2: ... made ... messy/dirty.
S1: What can we do to keep ... clean?
S2: We can ...

【解析】：
这是一道英语编创对话的题目，考查学生对描述环境脏乱原因及保持清洁方法的英语表达掌握情况。解题关键在于根据图片内容，运用正确的英语句式和词汇进行对话编写。
【答案】：
a
S1: What made your desk messy?
S2: The papers and books made my desk messy.
S1: What can we do to keep the desk clean?
S2: We can put the papers and books in order.
b
S1: What made the river dirty?
S2: The rubbish made the river dirty.
S1: What can we do to keep the river clean?
S2: We can stop throwing rubbish into the river.
c
S1: What made your bedroom messy?
S2: The clothes and toys made my bedroom messy.
S1: What can we do to keep the bedroom clean?
S2: We can put the clothes in the wardrobe and the toys in the box.

a　　b　　c
()　　　　()　　　　()
d　　e　　f
()　　　　()　　　　()

a 4 b 2 c 1 d 3 e 5 f 6

1 The river was ten years ago. The fish in the river were .
2 The makes the streets .
3 To our city clean, we should put rubbish in the .
4 We can take the to keep the clean.
5 We can more trees in the city.

1 dirty, dead 2 rubbish, messy 3 keep, bin 4 metro, air 5 plant