《I'll help to clean up the city parks》PPT课件3
《I'll help to clean up the city parks》PPT课件3第2页

clean up v.“打扫”。 Please clean up your bed and clothes. 请整理一下你的床铺和衣服。 clean –up n.“扫除”。 Clean –Up Day Clean –Up Day is only three ways from now on.