When you throw away trash，do you know which bin it should go in？Have you ever noticed the differently-colored trash bins on the street or in your neighborhood？
   Some of you might not be（1）

able

able

to answer this question easily.However，it's actually quite important to know how to sort（分類）waste.Not knowing how to sort（2）

waste/trash/rubbish

waste/trash/rubbish

can make it even harder to save energy and protect the environment.
   （3）

If

If

you don't sort your trash，all of it will go to a landfill（垃圾填埋場）and be buried together.These landfills can take up large areas of ground that could have been used（4）

for

for

planting trees or crops.The electronic waste can pollute the soil and groundwater.Other pieces of garbage，like the metal part of a pen，can be used to（5）

make

make

other things if they are properly recycled.
   With this in mind，the cities in China have been running waste-sorting activities in recent years.For（6）

example

example

，Shanghai announced in July that in three years，all of its citizens should sort their waste into four groups：wet，（7）

dry

dry

，harmful and recyclable.
Another 45 cities，including Chongqing，also plan to use this method to sort their waste.Now that you know this，perhaps you can try your best to（8）

protect

protect

the environment and encourage others to sort their trash.