20．I would really appreciateit if you could do me a favor．

19．Whether you like it or not，you've got to open your eyes to face thereality（现实）．

18．The devotionof too much time to playing computer games resulted in his failure in the exam．

17．Sarah and Janet have been friends since they （61）started（start） school．They do everything together：study，read，watch TV，surf the Internet，play sports and listen to music．Anyone （62）who has a problem can ask the other for help．When Sarah was in the （63）third（three） grade，some of the other students made fun of her （64）because she was shy．Janet told the other students to stop （65）making （make） fun of Sarah，and she helped Sarah overcome her shyness．In the fifth grade，Janet had （66）difficulty（difficult） in her maths class．She studied hard，（67）butshe just couldn't understand the homework．Sarah helped Janet （68）with her homework and （69）patiently （patient） explained every exercise to Janet．After six months，Janet did much better and even got（70）an A in the maths exam．

16．Some people think （61）that it is better to see the film than to read the book in （62）original（origin） （原著）．The reason （63）whythey hold the opinion is that it takes less time to understand the whole story．Besides，the film is usually more interesting and （64）it is easier to follow
（65）However，other people think differently．Their opinion is that they can get more detailed （详细的） information from the original book．At（66）the same time，the language in the book is more lovely and beautiful．
In my opinion，I agree   with  the （67）second（two） opinion．I have more reasons for it．I think I can study at home，reading（68）quietly（quiet）  by myself．Moreover，I can understand the（69）author's（ author） idea better．
In a word，to read the original work is better （70）than to see the film based on it．

15．Suddenly all the lights on that crowded underground train went out．Then it stopped in that dark tunnel．We waited．We expected the lights to come on again．（61）But nothing happened．
Then I began to smell （62）something．People around me then began to cry out in fear．"The train is on fire!"they cried．The woman （63）standing （stand） next to me （64）suddenly （sudden） fell on the floor．I realized she was overcome by the smoke．Then I saw flames appearing．"If something does not happen soon，"I said to （65）myself，"I （66）will be burnt （burn） alive!"But as I stood there in the dark in that crowded burning train，I could see no way to escape．So I cried，"God，if it is not my time to die，please help me!"I heard a noise．It was on my right side．I at once began to push my way forward to （67）where that noise came from．（68）For two hours I kept walking in that dark train tunnel．At last I saw （69）a light in the distance．"Thank God!"I cried．"God must have a purpose for saving my life．He must want me to help （70）otherpeople experience what he could do for them．"I decided．

14．H ave you ever gone （36）travelling（travel） abroad？（37）Actually（actual），it is interesting to visit another country，（38）whichcan broaden our mind and make us have an unforgettable experience，but sometimes there （39）are（be） some problems when we don't know the language very well．It may be （40）difficult（difficulty） to talk with the people there．We may not know how to use the telephone in the country which we are （41）visiting（visit）．We may not know how to buy the things we need．In a strange country we may not know where to eat （42）orwhat to order in a restaurant．It is not easy （43）to decide（decide） how much money to tip waiters or taxi drivers．When we are helpless，we may not know how to ask （44）forhelp．After a short time，however，we learn what to do and what to say．We learn to enjoy （45）living/life（live） in another country，and then we may be sorry to leave both the place and the people．It's a pity，isn't it？

13．However frequently they areperformed（表演），the works of Beethoven still attract people a lot．

12．She hoped to get a job on the local newspaper and eventuallyworked for"The Times"．

11．假定英语课上老师要求同桌之间交换修改作文，请你修改你同桌写的以下作文．文中共有10处语言错误，每句中最多有两处．错误仅涉及一个单词的增加、删除或修改．
增加：在缺词处加一个漏字符号（∧），并在其下面写出该加的词．
删除：把多余的词用（\）划掉．
修改：在错的词下画一横线，并在该词下面写出修改后的词．
注意：1．每处错误及其修改均仅限一词；
2．只允许修改10处，多者（从第11处起）不计分．
Dear editor，
I'm Li Hua，a high school student．During the summer vacation，I go to stay with my grandma on a small village．One day，I was amazed to see thousands of egrets（白鹭），an endanger species，flying to the mountains around a village．The villagers said the improving environment made these egrets to come back．But two weeks late，the villagers told me that lots of the egret eggs had stolen，about that I felt much upset．I think we should make the public know the importance of protecting rarely animals and take active and effective measure to protect them．
Yours，
Li Hua．