请根据所给汉语意思完成下列英语句子,每空一词(含缩写)
1.我们能为世博会做点什么?
＿＿ can we ＿＿ ＿＿ the world expo?
2.张林不得不在农场帮助父母.
zhang lin has to help his parents＿＿ ＿＿ ＿＿.
3.别听你的MP3了,上课了.
＿＿ ＿＿ ＿＿your MP3.the class begins.
4.他母亲已经生病一年多了
his mother ＿＿ ＿＿ ＿＿ for over a year
5.在过去的三年里我们学校发生了很大变化
oer school has changed greatly ＿＿ ＿＿ ＿＿ ＿＿ years