1 . Read the following paragraphs carefully and write a proper topic sentence for each paragraph.

    1    . First, it is the cheapest form of transport compared with trains and planes. As I am a student with only a small amount of pocket money, naturally I’ll try to find the cheapest way. Second, it is true that travelling by sea is much slower. But I can walk on the deck and enjoy the beauty of nature. In short, no other form of transport can make me happier.

Albert Einstein, one of the world’s geniuses, failed in his university entrance examination on his first attempt. William Faulkner, a famous American writer, never finished college because he could not pass his English courses. Sir Winston Churchill, who is considered one of the masters of the English language, had to have special tutoring in English during elementary school.    2    .

    3    . Karaoke is a good way to relax. You can learn a new song easily. It’s also a good way to entertain your friends. Nearly everybody can become a singing star. However, everything has two sides, and so does Karaoke. It’s noisy for your neighbours and makes them uncomfortable if you sing badly. In fact, it might create a kind of noise pollution.

It is true that the city can bring much convenience and entertainment, the very reason people can’t bear to part with city life.    4     Just think of the places where we live, full of petrol fumes and toxic gases, torn by the roar of buses and lorries day and night, and thronged ceaselessly by great crowds.