请根据句意从方框中选择合适的单词，并用其适当形式填空，使句子通顺。

(1)In the modern world, we should pay more attention to food. We should eat very ____ .
(2)Today is Children's Day. The children are enjoying ____ festival now.
(3)To support a big family, his father has to look for a ____  job besides delivering newspapers and milk.
(4)For your____ , you mustn't stand under the tree when it's raining in summer.
(5) Last month, Mrs Obama, U.S. First Lady, paid a week-long visit to China focusing on ____. She visited some schools and universities.

作文。
       人，总在变化——从待人接物到处事态度，从言谈举止到心理状态，从衣着打扮到气质风度，从兴趣爱好到目标追求。当人生开始一个新阶段的时候，这种变化来得更猛。现在，你走进初中校门了，你发觉自己在不经意之间已悄然发生变化了吗?请你选择某一方面的事例，与你小学时进行比较，以“我 在 变”为题写一篇作文，篇幅不少于600字。

市场上，一位顾客和一位卖微波炉的售货员出现了不同的意见，售货员说，微波炉很省电用它加热食品费不了多少电；顾客说，微波炉很费电，他家的微波炉一开就烧保险丝．他们二人说的情况是否真有矛盾，请你用科学术语表达他们的意思．

—Were you at home yesterday?

—No, I________. I was ________ school.