题目内容：

Read the passage and fill in the blanks with suitable words（在短文的空格内填入适当的词，使其内容通顺。每空格限填一词，首字母已给）

Follow that trash（垃圾）

People don't like to talk about trash. Trash is smelly, dirty, ugly, broken, useless stuff. That's w1. we throw it out. But everyone knows that trash affects our environment. It can pollute our land, water and air. So it's important to recycle our trash as much as possible.

Some Americans were very interested in recycling and they were curious（好奇的）about what r2. happened to their trash. So, what did they do? They became d3. and decided to "Follow that trash!"

They took some items out of their recycling bin and puts e4. tags（标签）on them. Signals would be s5. to a computer by tags so the people could follow their trash on its journey. They found that some trash only travelling a few kilometres but some trash travelled hundreds of kilometres. Some trash was recycled, b6. much of it went into landfills.

Waste management companies in America think this detective work will be helpful to them. Getting rid of waste is very expensive and this "trash tracking" will help them to become more efficient. It will save them time and money.

However, the trash detectives say it's a7. important to reduce the amount of trash we produce. After all, if we produce less waste, we won't have to worry about where it goes.