题目内容：

完成句子
IX.完成句子 根据汉语句意完成英语句子,每个空格填一个单词.
81.今年暑假去看世博会好吗?
___________ ___________ going to Shanghai World’s Fair this summer vacation?
8.2到了过低碳生活的时候了.
It is time ____________ ___________ a Low-Carbon life.
83很多人在三月二十七晚上八点半到九点半关上了电灯.
Many people ___________ ___________ the loghts from 8:30 to 9:30 on March 27.
84.人们邀请他谈论一下哥本哈根会议.
He was invited to ___________ __________ the Copenhagen Convention.
85.作为一名中学生,我们要过低碳生活.
___________ ___________ a student,we are supposed to have a Low-Carbon life