Researcher Robert Engelman frown Population Action International says by the year 2025 about 3000 million people may lack water. At least 18 more countries are expected to have serious water problems. The need for water keeps increasing.

Mr Engelman says the population in these countries that lack water is growing faster than in other parts of the world. The report says lack of water in the future may result in（导致）several problems. It may even increase ______ problems. Lack of water often means drinking water isn't safe. Mr Engelman says there are problems all over the world because of diseases. Lack of water may also ______ more international conflict（冲突）. Countries may have to compete for water in the future. Some countries, such as Egypt, the Netherlands, Cambodia, now get sixty percent of their fresh water from other countries. And the report says lack of water would affect（影响）the ability of developing to improve their economies. This is ______ new industries（工业）often need a large amount of water when they are beginning.

The Population Action International study gives several solutions ______ the water problem. One way, it says, is to find ways to use water for more than one purpose. ______ way is to teach people to be careful and not to waste water. A third way is to use less water of agriculture. The ______ also says long-term（长期的）ways of dealing with the water problem must include controls on population growth.

Do you think you could live your life without buying anything? There are people in the world who live this way. They are called freegans (免费素食主义者). Freegans live a non-consumerist (非消费主义的) lifestyle—they ________ clothes, household items and even food that other people just throw away.

________ food plays a big part in the life of freegans. They look for food in the wild, grow or make food ________, or even eat food that they take from waste bins. When you hear the word “waste bin” you usually think of a smelly (发臭的), ________ place, but in reality, most food that is thrown away is of good quality. Many supermarkets throw away vegetables and fruits ________ because they look ugly. Freegans eat this kind of food.

I used to have many ________ about the freegan way of living. I thought they were poor or homeless. But in fact, most freegans have enough money to live, just like regular consumers. ________, they choose to live in a way that is more eco-friendly. Many of them also ________ their free time volunteering to promote (宣传) a greener lifestyle.

It’s ________ for many of us to live a freegan lifestyle because we are used to consumerism (消费主义). This is why I really ________ the freegans and their wish to protect the planet. I am now trying not to buy any unnecessary things. It is my first step in helping reduce global waste.

If you want your life to stand for peace(和平) and kindness, it's helpful to do kind, peaceful things.

We live in the country near San Francisco. It is a very beautiful place. But people throw rubbish out of their_______when driving on the roads. I think that will destroy the beauty.

I_______pick up rubbish near our house with my two children. My daughters often say to me in a happy_______, "There is some rubbish, Daddy._______the car." And then we will pull the car over and pick it up. It may seem strange, but we_______it. We pick up rubbish in parks, on sidewalks, almost_______

Once I saw a stranger(陌生人) picking up rubbish like us. He smiled at me and said, "I_______you do it, and it seemed like a good idea."

Picking up litter is only one of the things we can do to_______others. You can do other things like holding a door open for people or visiting lonely elderly people in nursing homes(养老院). Things like these are_______but helpful.

These little acts of kindness can help you know how________it feels to be kind and helpful.