一、听录音，选择听到的单词或短语。
1.litter 2.make 3.skin4.pick it up 5.move away
二、听录音，根据所听问题选择合适的答语。
1.What makes the air dirty?
2.How do you go to school?
3.Can you put rubbish in the river?
4.Do you plant trees in the park?
5.What can we do to keep the city clean?
三、听录音，判断下列图片与所听内容是(Y)否(N)相符。
1.My sister fell yesterday.
2.They always go home by bike.
3.We have two bins.
4.The old man is sitting on the chair.
5.He is planting trees.
四、听录音，填入所缺的单词补全句子。
1.The air is so dirty.
2.We should keep the library clean.
3.Smoke from cars can make the air dirty.
4.What makes the river dirty?
5.There’s a big museum in our city.