21. We can never expect ________ bluer sky unless we create ________ less polluted world.
A. a; a B. a; the C. the; a D. the; the
【答案】A。
【考点】考查冠词的用法。
【解析】在通常情况下，名词sky和world前面该用定冠词，而非不定冠词。但是，当它们受到描绘性定语的修饰时，就应用不定冠词。又如：The stars were bright in a cloudless sky. 天空无云，群星灿烂。We live in a changing world and people must learn to adapt. 我们生活在变化着的世界里，人们必须学会适应。
22. ―I wonder how much you charge for your services.
―The first two are free ________ the third costs $30. (2009安徽卷)
A. while B. until C. when D. before
【答案】A。
【考点】考查连词用法
【解析】while在此表示对比，其意为“而”。句意为：前面两个是免费的，第三个要30美元。又如：Prices are rising sharply, while incomes are lagging far behind. 物价飞涨而收入却远远落后。
23. Daniel’s family ________ their holiday in Huangshan this time next week. (2009安徽卷)
A. are enjoying B. are to enjoy C. will enjoy D. will be enjoying
【答案】D。
【考点】考查动词时态的用法
【解析】根据句中的时间状语this time next week（下周的这个时候）可知，句子应用将来进行时。句意为：下周此时，丹尼尔一家应正在黄山度假。又如：What will you be doing this time next week? 下周这个时候你要做什么?
24. ―Do you think it’s a good idea to make friends with your students?
―________, I do. I think it's a great idea. (2009安徽卷)
A. Really B. Obviously C. Actually D. Generally
【答案】C。
【考点】考查特定语境中副词的用法。
【解析】对于考查特定语境中词语用法的考题，最好的方法是代入翻译法，即将四个选项分别代入句中再翻译原句，哪个选项使原句最通顺，哪个选项就是最佳答案。四个选项的意思分别为：really意为“真正地”“确实”，obviously意为“明显地”，actually意为“实际上”，generally意为“一般来说”。根据句子语境，选项C最符合情境。句中的“Actually, I do”的意思是：事实上，我就是这样做的。
25. Just as Professor Scotti often ________ it, success is ninety-nine percent mental attitude. (2009安徽卷)
A. gets B. makes C. puts D. means
【答案】C。
【考点】考查特定语境中动词的用法。
【解析】对于考查特定语境中词语用法的考题，最好的方法是代入翻译法，即将四个选项分别代入句中再翻译原句，哪个选项使原句最通顺，哪个选项就是最佳答案。注意，此题中put 表示“说”“表达”，而不是表示“放”。句意为：正如斯科特教授经常说的那样, 成功的99%取决于心态。又如：To put it bluntly, you’re fired! 直截了当地说吧，你被解雇了! How shall I put it? 我该怎么说才好呢?
26. ―Could you be so kind as to close the window?
― ________.(2009安徽卷)
A. With pleasure B. Go ahead C. Yes, please D. That’s OK
【答案】A。
【考点】考查交际口语的用法。
【解析】with pleasure在口语中可用来愉快地答应对方的请求或邀请，其意为“好的”“没问题”“十分愿意”。又如：Will you lend me the book? 这本书借你给我好吗? With pleasure. 可以。
27. A good friend of mine from ________ I was born showed up at my home right before I left for
A. how B. whom C. when D. which
【答案】C。
【考点】考查定语从句的用法。
【解析】句中的from when相当于from the time when。句意为：一个从小就跟我玩得好的朋友就在我动身去北京之前到我家来看我。又如：I knew him pretty well from when he was a DJ in that club. 从他在那个俱乐部担任流行音乐节目主持人开始，我就对他很熟。
28. The play ________ next month aims mainly to reflect the local culture. (2009安徽卷)
A. produced B. being produced
C. to be produced D. having been produced
【答案】C(http://www.yygrammar.com/)。
【考点】考查非谓语动词的用法。
【解析】根据句中的next month可知，动作尚未发生，故应填不定式的被动式。又如：Do you know anything about the conference to be held next week? 你对下星期召开的会议有什么了解吗?
29. Some people who don’t like to talk much are not necessarily shy；they ________ just be quiet people. (2009安徽卷)
A. must B. may C. should D. would
【答案】B。
【考点】考查情态动词的用法。
【解析】may在此表示推测，其意为“可能”。句意为：有些不喜欢多说话的人并不一定是因为害羞，他们可能只是喜欢安静。又如：I think her condition is improving but it may just be wishful thinking on my part. 我认为她的情况正在改善，但这也许是我一厢情愿的想法。
30. Many children, ________ parents are away working in big cities，are taken good care of in the village. (2009安徽卷)
A. their B. whose C. of them D. with whom
【答案】B。
【考点】考查定语从句的用法。
【解析】their是物主代词，不是关系代词，不能引导定语从句，所以不能选；在其余四个选项中，只有whose能用于名词作定语，故选B。句意为：许多父母外出到大城市打工的孩子，他们在家乡被照顾的很好。又如：Ann, whose children are at school all day, is trying to get a job. 安的孩子们整天都在学校，所以她在想办法找份工作。
31.
A. reputation B. influence C. impression D. knowledge
【答案】A。
【考点】考查特定语境中名词的用法。
【解析】根据句意和空格后的介词for可知答案只能选A。表示因为某事而获得名声，reputation后通常接介词for。又如：The judge has a reputation for being fair. 这位法官以公正闻名。Our company is proud of its reputation for fair dealing. 我们公司以享有经营作风正派的美誉而感到自豪。
32. ________ a certain doubt among the people as to the practical value of the project. (2009安徽卷)
A. It has B. They have C. It remains D. There remains
【答案】D。
【考点】考查there be句型的变体。
【解析】考查there be句型的变体there remain。又如：There remains one matter still to be discussed. 有一个问题尚待讨论。There remained just twenty-eight pounds. 只剩28英镑了。
33. We tried to find a table for seven, but they were all ________. (2009安徽卷)
A. given away B. kept away C. taken up D. used up
【答案】C。
【考点】考查短语动词的用法。
【解析】对于考查特定语境中词语用法的考题，最好的方法是代入翻译法，即将四个选项分别代入句中再翻译原句，哪个选项使原句最通顺，哪个选项就是最佳答案。四个选项的意思分别为：give away意为“送掉，分发，放弃，泄露，出卖”；keep away意为“使离开”；take up意为“占据，继续，吸收，责备，认购”；use up意为“用完，耗尽”。根据句意，答案应选take up，在此表示“占据”。又如：The work took up all of Sunday. 这活儿占去了整个星期天。
34. But for their help, we ________ the program in time. (2009安徽卷)
A. can not finish B. will not finish
C. had not finished D. could not have finished
【答案】D。
【考点】考查虚拟语气的用法。
【解析】but for的意思是“要不是……”“若不是……”，通常要与虚拟语气连用。如：But for appropriate software, a computer would be a mere box. 如果没有恰当的软件，电脑只是一个空盒子罢了。I would have been in real trouble but for your help. 要不是有你帮忙，那我可就倒大霉了。But for the storm, I would have been home before eight. 要不是因为这场风暴，我早在8点钟以前就回到家里了。
35. I’m amazed to hear from my school teacher again. ________, it is ten years since we met last. (2009安徽卷)
A. In a word B. What’s more C. That’s to say D. Believe it or not
【答案】D(http://www.yygrammar.com/)。
【考点】考查固定搭配的用法。
【解析】Believe it or not为英语中的习惯用语，其意为“信不信由你”。又如：We were, believe it or not, in love with each other. 信不信由你，我们在相爱。Believe it or not, we were left waiting in the rain for two hours. 信不信由你，我们冒雨一直等了两个小时。