Litter is everywhere，doing great harm     1     the environment and life on our planet.Jeff Kirschner，who wants to build a litter-free world，started a global community named Litterati     2       (settle)this problem.

The story began with his 6-year-old daughter.One day they were going on a hike when the girl noticed a     3     (break)plastic tub(浴盆)in a river.She said，“Daddy，that doesn’t go there.”That took Kirschner by surprise.He，like many adults，had become so used to the rubbish around them that he hadn’t given it a second look.    4     his daughter said reminded him of the serious problem our planet faces.

Jeff started to take       5    (act).He created Litterati，an app that makes it fun to pick up litter.The idea is       6    (fair) simple:Spot a piece of trash，take a photo，post the photo online and then put the litter into dustbins.

    7     (see)that Jeff was keeping a record of the positive impact he was having on the planet，people worldwide started participating.Up to now，over 2，500，000 photos posted by 3,500 people from over 40 countries     8     (find)their way to Litterati’s digital landfill.

Litterati is more than an app.It is a highly     9     (effect)solution to a pressing issue.Wherever you live，whatever you do and       10     you are，join Litterati to make the world a cleaner and healthier place to live in.

3 . Green is not always referring to the color. In some cases, it is the term used for environmental    1    (friend). If you’ve been expecting to replace your furniture, consider     2    (go) green because green furniture offers many benefits. Here are a few tips to get you started on your hunt for the perfect eco-friendly furniture.

First, green furniture isn’t harmful    3    your health. Also its making process doesn’t cause damage to the environment in any way. Besides, by using eco-friendly     4    (product), you prevent global warming to some degree in your own way.

The materials    5    are used in furniture are what make them green. Materials can be good for the environment     6     because they are renewable resources or they are all     7    (nature). A lack of chemicals in furniture also    8    (mean) it is a better choice for the environment. It may be hard to imagine that a sofa or a table could actually be    9    green product, but they really can be depending on what they     10    (make)of.

Therefore, when you want to hunt for the perfect green furniture, you should choose the green materials.