阅读材料，回答问题．

材料一   在我国，滥用抗生素的下现象非常普遍，有些人甚至把它当作治疗感冒和咳嗽等疾病的“万灵丹”．据统计，我国每年约有8万人直接或间接死于滥用抗生素；由于 长期使用或用药不当，细菌对抗生素的耐药性逐渐增强．在二战期间，几十到一百单位的青霉素就可以挽救无数伤员的生命，现在相同病情，用几百万单位也没有效 果；在某些地方，金黄色葡萄球菌的耐药性，连抗生素的王牌“万古霉素”也无法将其消灭．

材料二   为改变抗生素的不合理使用，2004年7月国家正式实施凭处方购买抗生素的规定，除黄连素和一些非处方灭菌药物外，其它抗生素均要凭医师处方购买和使用．因此，到药店购药须认清处方用药和非处方用药．

    Early this morning we all went to the Future Hall to have our graduation ceremony. The headmaster made a wonderful speech, and many of us ____ (move) to tears.

    Now the ceremony is over. We will leave school soon. I feel very excited because I am one of the best ____ (graduate). At the same time, I am a little sad because I have to say goodbye to my classmates and teachers. I want ____ (take) some photos with them and I will give some gifts to my teachers as well. In the past three years, I ____ (have) a great time in Red Star International School. I have learnt not only how to study, but also how to be a man. In ____ future, I will work much ____ (hard). I hope I can be an astronaut when I ____ (grow) up.

    Maria, Jane and Michael ____(go) back to their hometowns tomorrow and I will see them off at the airport. We will keep in touch ____ each other by sending emails, making telephone calls or writing letters. We will be good friends forever. I wish my classmates and teachers health, ____（happy） and good luck.