完成句子（共6小题；每小题1分，满分6分）

根据句意及括号内的汉语提示完成句子。（每空一词）

小题1:After about three _________ (星期) holiday, we came back to school.

小题2: The food factories in China should realize the ___________ （重要）of food safety and produce healthy food for the Chinese people.

小题3:Now more and more people are rich enough to ______(买得起) new houses and cars.

小题4:Would you mind ______(去拿) some water for me, Li Ping?

小题5:Tomorrow is his ___________ (第四十)birthday. He plans to have a party.

小题6:___________（科学家）have tried lots of times to look for aliens from other planets in the last two centuries.

如果让你写一篇关于三农问题的实践报告，你会从哪几个方面回答？