Studying in groups is becoming more and more popular in class. It has many{#blank#}1{#/blank#} (advantage). For example, we can not only save time but also encourage each other when we study {#blank#}2{#/blank#}groups. I still remember when I was in Grade 8, my physics {#blank#}3{#/blank#}(be) very poor. I had{#blank#}4{#/blank#}really hard time with it. Once in class, the teachers asked{#blank#}5{#/blank#}to discuss it with each other, but I was very shy, I could not do it like what they told me. My physics teacher encouraged me to face others and talk with someone else{#blank#}6{#/blank#}(brave). Then I studied with some classmates together. When I did not understand any questions, they could give me some advice, I could quickly find out the ways{#blank#}7{#/blank#}(deal) with the problems. After that, I felt very relaxed and asked my classmates a lot of questions about physics. I did not feel stressed out at all. At last, I finished my homework {#blank#}8{#/blank#}myself for the first time. How {#blank#}9{#/blank#}(excite) I was!

    At least thirty times Bobby had tried to climb the snowy mountain, but he Because of {#blank#}10{#/blank#}(study) in groups, I am not worried about physics any more. With my classmates' help, I get more confidence. It also gives me more chances to improve myself in many ways.

    The way we cook is important. In many countries, the two choices are {#blank#}1{#/blank#}(nature) gas or electric ­powered stoves.

    The World Health Organization warns that millions of people {#blank#}2{#/blank#}(suffer) from indoor air pollution at present time, which results from the use of {#blank#}3{#/blank#}(danger) fuels and cook­ stoves in the home.

    WHO officials say nearly three billion people are {#blank#}4{#/blank#}(able) to use clean fuels and technologies for cooking, heating and lighting. As a result, more than seven million people die from exposure to indoor or outdoor air pollution each year. Most of the deaths are in {#blank#}5{#/blank#}(develop) countries, such as India, China and Latin American countries.

    WHO officials say opening a window or door {#blank#}6{#/blank#}(let) out the harmful air will not correct the situation. {#blank#}7{#/blank#}will only pollute the outdoors.

    Nigel Bruce, {#blank#}8{#/blank#} is a professor of Public Health at the University of Liverpool, says researchers are developing good cook­stoves and other equipment to burn fuels {#blank#}9{#/blank#} a more efficient way.

    But, this is just a start. It is urging developing countries to use {#blank#}10{#/blank#}(clean) fuels and increase access to cleaner and more modern cooking and heating appliances (用具).

    As Victor Hugo once said, “Laughter is the sun that drives winter from the human face”, and up to now nobody {#blank#}1{#/blank#}(be) able to do this better than Charlie Chaplin. He brightened the lives of Americans and British through two world wars. He made people laugh at a time {#blank#}2{#/blank#} they felt depressed, so they could feel more content {#blank#}3{#/blank#}their lives.

    Charlie was born in a poor family in 1889. His parents were both poor music hall performers. You may find it astonishing that Charlie {#blank#}4{#/blank#}(teach) to sing as soon as he could speak and dance. Such training was common in acting families at this time,{#blank#}5{#/blank#}(especial) when the family income was often uncertain. Unfortunately his father died, {#blank#}6{#/blank#}(leave) the family even worse off, so Charlie spent his childhood {#blank#}7{#/blank#}(look) after his sick mother and his brother. By his teens, Charlie had, through his humour, become one of the most popular child{#blank#}8{#/blank#}(actor) in England. He could mime and act the fool doing ordinary everyday tasks. No one was ever bored watching him－his subtle acting made everything entertaining.

    With time{#blank#}9{#/blank#}(go) by, he began making films. He grew more and more popular as his charming character, the little tramp, became known throughout {#blank#}10{#/blank#}world.

    Rivers are one of our most important natural resources. Many of the world's great cities are located on rivers and almost every country has at least one river {#blank#}1{#/blank#} (flow) through it, which plays an important part in the lives of {#blank#}2{#/blank#} (it) people.

    Since the beginning of history, people {#blank#}3{#/blank#} (use) rivers for transportation. The Yellow River and Changliang River play a large role in China. The Mississippi, the {#blank#}4{#/blank#} (long) one in the United States ever influenced the American people {#blank#}5{#/blank#} (great) in history. The lifeline of Egypt is the Nile. Rivers provide fresh water {#blank#}6{#/blank#} drink, grow crops, make electricity and chances to have fun for those {#blank#}7{#/blank#} live along their banks.

    {#blank#}8{#/blank#} the cities grow in size and industries increase in number, the river water is severely being polluted. It urges all countries to make {#blank#}9{#/blank#} (decide) and take immediate action to stop it from {#blank#}10{#/blank#} (pollute) any more.