Dear brother,

    I'm now writing to you for your advice. How I wish you{#blank#}1{#/blank#} (be) here with me!

    Yesterday afternoon, I went to a bookstore with one of my friends. After we went out, he showed me {#blank#}2{#/blank#}book he had stolen ,{#blank#}3{#/blank#}(consider)he was wrong, I suggested he{#blank#}4{#/blank#}(go)back to return it or pay for it.{#blank#}5{#/blank#} he didn't listen to me, otherwise I wouldn't have reported it to his mother.

    Now I'm really{#blank#}6{#/blank#} (regret). I would rather I {#blank#}7{#/blank#} (let)his mother know it. After all, he is my friend, without {#blank#}8{#/blank#}help, I wouldn't have made so rapid progress in study.

    But {#blank#}9{#/blank#}is now obvious that he has begun to hate me. It seems as if we hadn't been friends before. Can you advise what I should do now?

    {#blank#}10{#/blank#} (be) you in my position, what would you do? I hope you can give me some advice as soon as possible.

    Although he is only eleven years old, James helps the aged. Every day, he goes to Redhill {#blank#}1{#/blank#} train to help three old people with housework and shopping. In this way, he has made their lives much easier. It is through James' hard work that a Neighbourhood Care Program has been started. So far, James and his friends {#blank#}2{#/blank#} (form) a group of young volunteers to seek out the people {#blank#}3{#/blank#} need help. They do this without funding and without recognition. Their main aim is {#blank#}4{#/blank#} (make) a difference through personal sacrifice.

    Many kinds of dinosaurs' bones {#blank#}1{#/blank#}(find) recently by Chinese scientists in Nanyang county, Henan Province. {#blank#}2{#/blank#} the scientists inspected the bones, they were surprised {#blank#}3{#/blank#}(spot)) these dinosaurs could not only run {#blank#}4{#/blank#}the others but also climb the trees.

    Dinosaurs died {#blank#}5{#/blank#} suddenly around 60 million years ago. Some scientists think {#blank#}6{#/blank#}came after an {#blank#}7{#/blank#}(expect) incident when a huge rock from space hit the earth {#blank#}8{#/blank#} put too much dust into the air. Others think the earth got too hot for the dinosaurs to live on any {#blank#}9{#/blank#}(much). Nobody knows {#blank#}10{#/blank#}sure why and how dinosaurs disappeared from the earth in such a short time.

    No one knows exactly {#blank#}1{#/blank#} the earth began. However, according to a widely accepted theory, the universe began {#blank#}2{#/blank#} a "Big Bang". Then the dust {#blank#}3{#/blank#}(settle) into a solid globe. As the earth cooled down, water began to appear on its surface. Many {#blank#}4{#/blank#}(science) believe that it was the presence of water that allowed the earth to dissolve {#blank#}5{#/blank#}(harm) gases and acids into oceans and seas, which made it possible for life to develop.

    Millions of years later, the first small plants appeared on the surface of the water. Their development {#blank#}6{#/blank#}(follow) by early shellfish, all sorts of fish, green plants and land animals. Reptiles {#blank#}7{#/blank#}(produce) young generally by laying eggs while mammals gave birth to young baby animals. Dinosaurs existed on the earth for over 140 million years before they suddenly disappeared. The reason {#blank#}8{#/blank#} they disappeared still remains a mystery.

    Finally, humans appeared and spread all over the earth. But they are putting too much carbon dioxide into the atmosphere, which prevents heat from {#blank#}9{#/blank#}(escape) from the earth into space. As a result of this, people believe the earth may become too hot to live on. So {#blank#}10{#/blank#} life will continue on the earth will depend on how this problem can be solved.

    The silent killer — air pollution causes seven million premature (过早的) {#blank#}1{#/blank#}(death) a year, not just in{#blank#}2{#/blank#}(develop) countries but also in UK and the USA as well. In China，people are well aware of the health problems it brings.

I check every part every day. If it has heavy air pollution, I will prepare masks for my family. I dislike{#blank#}3{#/blank#}when the air is bad. Because bad air makes it difficult for me to breathe and I think it does influence my{#blank#}4{#/blank#}(perform) at work. A new research in china has also found a link between air quality and levels of intelligence. In the study, 25,000 people living across China{#blank#}5{#/blank#}(test) in language and math skills last year. They found the results of those{#blank#}6{#/blank#}lived in more polluted areas were{#blank#}7{#/blank#} (negative) impacted, especially in languages. It adds to a growing body of evidence that air pollution has an effect not just on the lungs and heart{#blank#}8{#/blank#}on the brain.

    This research shows that the longer we are exposed to air pollution, the {#blank#}9{#/blank#} (many) problems we're storing up for later life. Campaigners hope this study will persuade the British government{#blank#}10{#/blank#}(think) hard before it publishes its clean air strategy next year.