In every country a lot of people like ___1___ all kinds of things. During the 1930s people in America didn’t have much money. Many didn’t have enough money to buy ___2___ for their children. Boys often ___3___ together and played a game with the caps from milk bottles. Often the caps had pictures on them. Boys would pile up the bottle caps on the ground. Then they would hit them with something heavy. They picked up those that turned over and kept them. Girls often collect dolls. In ___4___ countries, it is very popular to collect Barbie dolls（芭比娃娃）. A Barbie doll looks like a teenager. At first Barbie just had blonde hair, and was American. Now Barbie is made so that she looks like people from all countries of the world. There is even a ___5___ Barbie!

　　Use boxes again. Reuse the box that you ___2___ when you give a gift to ___3___ else. ___4___ makes new things from old things. There are recycling bins in almost every town or neighborhood, some things that you can recycle are：paper, glass, plastic, ___5___.

A：Hi there, Dandan. What are you doing out here?

B：I'm planting a tree in ___1___ of Earth Day.

A：In honor of Earth Day?

B：Sure, we should ___2___ do something to help the Earth ___3___ this day.

A：I ___4___. What can I do to help?

B：You can pick ___5___ any garbage in the park.

A：Alright.

　　I have e__1__ received a letter from my brother, Tim. He is in Australia. He has b__2__ there for six months. Tim is an engineer. He is w__3__ for a big company and he has already visited a great number of b__4__ places in Australia. He has just b__5__ an Australian car and to Alice Springs, a small town i__6__ the center of Australia. He w__7__ soon visit Darwin. F__8__ there, he will fly to Perth. My brother has n__9__ been abroad（国外）before, so he is finding this t__10__ very exciting.

　　Some parts of the sea are very shallow（浅的）. But some places are very d__7__ There is one place near Japan. It is nearly eleven kilometers deep. The h__8__ mountain in the world is about nine kilometers high. If we put that m__9__ into the sea at that place, the water is higher than it!

　　The sea is salty（咸的）. There is one sea called the Dead Sea. It is very salty. It is s__10__ salty that swimmers can't go down!

　　A seeing-eye d__1__ is a special dog. It helps blind people walk a__2__ the streets and do many other t__3__. We call these dogs“seeing-eye”dogs because the dogs are the“e__4__”of the blind men and they help them to s__5__.These dogs go to special schools for several years to learn to help blind p__6__.

　　One day a seeing-eye dog and a blind man g__7__ on a bus together. The bus was full of people and there were n__8__ spare seats. One man, however, soon got up and left. The dog took the blind man to the seat but there was very little space. The dog began to push the people on each side with his nose.He pushed and pushed until the people moved down and finally there was enough space for two. The blind man then sat d__9__ and the dog got upon the seat at the side of the blind man. He lay and soon fell asleep. Everyone on the bus had to smile at the cleverness of the dog in making space for the blind man, and at the same time, making a place for h__10__.