单项选择题

A．Pick out all the glass and metal.
B．Get rid of dust.
C．Burn waste paper.
D．Screen earth and sand.
<上一题 目录 下一题>
热门 试题

填空题
John Wood, who traveled to Nepal to help poor school children, used to work______.
填空题
What has Wood found by helping the children of Nepal
相关试题