解析：参考解析:代词用法。it经常作为形式主语置于句首，代指后面表述的内容，尤其是当后面代指的内容较长的时候。在本题中，it代指that the talks between the two companies have not made any progress。这种用法在英语中经常出现，通常主句的动词一般为say、report、 believe等，可以视为─种固定结构。其它选项代词没有这种用法。句意:据报纸报道，两家公司的谈判没有取得任何进展。

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Football is _________ the most popular sport of the world.

A. by far

B. far from

C. much far

D. so far

解析：by far 到目前为止

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Once environmental damage __________ , it takes many years for the system to recover.

A. had done

B. does

C. is to do

D. is done

解析：参考解析:解析:被动语态。主语environmental damage与谓语do之间是被动关系，而且表述的是普遍事实，所以时态应为一般现在时，故答案为is done。句意:环境一旦遭到破坏，需要很多年才能恢复过来。

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l thought you ________ like something to read, so I have bought you some books.

A. may

B. might

C. could

D. must

解析：参考解析:本题中，首先确定时态是过去时，could和might都可表示过去时，但是前者没有后者正式。must语气太过肯定，不能选，故选B。

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__________ tired of Tom＇s all-talk-no-action attitude, Julia decided to do the job all by herself.

A. To get

B. To have got

C. Getting

D. Have got

解析：参考解析:本题考查对分词短语用法的掌握。由Getting引导的分词短语在句中做状语，表示原因。

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The work they are doing is _____ great value.

A. in

B. of

C. by

D. from

解析：参考解析: be of+抽象名词相当于该抽象名词的形容词，is of great value = valuable，故选B。

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I was almost asleep last night when I suddenly heard someone _________ at the door.

A. be knocking

B. knocking

C. to knock

D. having knocked

解析：参考解析:感官动词。感官动词比如see、watch、hear后面接动词的ing形式，表示某种动作正在进行。也可以加动词原型表示动作的整个过程。此题是说正要睡着的时候突然听到有人敲门，表示的应该是正在进行的动作，所以应该是进行时态。故B为答案。A项是现在进行时的形式，没有这种用法。C项不定式不能放在感官动词后面。D项现在完成进行时也不能放在感官东西后面使用。句意:昨晚我快睡着的时候突然听到有人敲门。

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The market economy is quickly changing people＇s idea on____is accepted.

A. that

B. which

C. what

D. how

解析：参考解析:关系代词用法。题中on的后面缺少宾语，而从句中又缺少主语，在所有的选项中只有what可以担当双重成分，既充当主句的介词宾语，又充当从句的主语。干扰项A. that一般只作一种成分，而且在从句中充当主语、宾语和补语。句意:市场经济正在快速改变人们对已接受事物的看法。

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At that moment she was standing a few meters away from __________ we are now.

A. what

B. which

C. there