下列各句中均有一处错误，指出并改正。
(1) In the past two years Miss Brown has taught us writing English.
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(2) I am glad to receive your letter ask for my advice on how to learn Chinese well.
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(3) Be a listener is not easy.
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(4) The audience stood up, cheered and clapping for a long time.
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(5) Luckily, people have realized the serious harm causing by the smog and the importance of protecting the environment.
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(6) There exists now a park with a small river runs through it.
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(7) To reduce it, the followed suggestions may help.
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(8) All of us enjoy his lessons which are lively and interested.
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(9) Later on, I often watched them carefully learn their techniques. Then I kept practiced until I became confident enough to challenge them. (本题有两处错误)
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(10) My job was putting the bread in the oven, serve the bakery’s customers and helping to keep the place clean.
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(11) Nowadays, take China’s high-speed trains is a popular way to travel.
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(12) That’s because competition is a driving force made him going forward.（本题有两处错误）
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(13) After waiting for an hour, Katia went home, felt lonely and miserable.
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(14) Not have tried this kind of job, we thought it was easy to teach a little students.
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(15) The best way to avoid cheated is never to believe the super low price.
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