阅读下面短文, 在空白处填入1个适当的单词或括号内单词的正确形式。Iˈve always loved the ocean. In the (seven) grade, I started volunteering at the Monterey Bay Aquarium in California. I was upset to learn that many sea animals eat plastic garbage, (think)it is food. I decided to do something (educate) people about this problem. I held presentations at schools to teach kids about plastic waste. I wanted to reach businesses too. I decided that if I learned of a company used a lot of plastic, Iˈd send it an email urging it to cut back. One day, I saw a commercial for a health-care company. People in the ad were using plastic straws (吸管). I found the contact information of the company emailed its president. I told him how (harm) plastic could be to the environment and asked him to consider using more eco-friendly options. I was so (excite) when he wrote back to me. He said he would make sure that the company cut its use of plastic straws in half. I kept going. Whenever I heard of businesses using plastic, Iˈd send an email. One of the biggest companies I wrote to (be) Alaska Airlines Paris. A company (represent) wrote back and told me the airline was switching overplastic to paper cups on all of its 1, 200 daily flights.
答案:【1】seventh【2】thinking【3】to educate【4】that/which【5】and【6】harmful【7】excited【8】was【9】representative【10】from