20 prosecute ['pr?sikju:t] v.依法处置
Lesson 143~ 144
be surrounded by 被??环绕 hundreds of 成百上千的 have been asked 以被告知
keep the woods clean and tidy 保持树林的整洁 have been placed 以被放置 go for a walk = take a walk 去散步 was covered with ? 覆盖着?? cigarette ends 烟头
rusty tins 生锈的罐子 among the rubbish
在垃圾堆中