24. ---Why are they taking all the equipment away?

---The job ____, they are packing up to leave.

A. done                 B. being done                C. was done    D. having done

【解析】A：本句最重要的标志符号为第二句两段之间的逗号：前后如为主句和从句之间关系，必有连词。既然没有连词，且后一句为完整句，前半部分势必为独立主格结构。排除C项；B、C分别因时态和语态不正确被排除。

三、交际口语类

23.---You could have asked Mr. Richards for help. He is kind-hearted.

----Yes. But that ____him a whole day.

A would have taken      B. had taken                 C. would take    D. would be taken

【解析】A：本句为承前省略的虚拟语气主从复合句，还原后为：If I had asked Mr. Richards for help, that would have taken him a whole day.

22.----Were all the toys for the children carried to their kindergarten?

----No,____ only some of them.

A. It  was              B. they ere                 C. there were       D. there was

【解析】A：本举考查强调结构的省略用法，补全后为:It was only some of them that were carried to their kindergarten.

21.He arrived in Hollywood in 1964,____some time later,he became a foamous actor.

A.     when               B.where                   C.that            D.which

【解析】B：干扰点是关系词距离时间1964近，而从句中已有some time later这一时间状语，不可能重复，所以应该是在某一地点的一段时间后，他成了著名演员，定语从句应修饰Hollywood。

20.We cannot figure out ____quite a number of insects, birds, and animals are dying out.

A.     that                B. as                      C. why          D. when

【解析】C：figure out=understand by thinking. 理解。从句意看我不明白大量物种正在消亡，缺少状语，排除A、B项。从are dying out的时态排除D项，应该是我不明白大量物种为什么正在消亡。

19.----What did he want to know,Anne?

-----_______I could finish writing the report.

A.     When was it         B.It was when that         C.It was when    D.When it was that

【解析】D：本句承接上文考查know的宾语，所以回答应该是陈述语序的名词性从句。When 引导的强调结构的特殊问句作宾语，用陈述语序。

18. _____is known to us all is that the old scientist, for____ life was hard in the past,still works very hard in his eighties.

A.     As; whom           B. What; whom          C. It; whose          D. As; whose

【解析】B本题考查连接代词。_____is known to us all 是主语从句，排除AD,第一个空上的词要做主语， 第二个空上的词做for的宾语，代替the old scientist。

17.We live day by day ,but in the great things, the time of days and weeks ______so small that a day is unimportant.

A.     is               B.are                  C.has been            D.have been

【解析】A本题考查主谓一致。句子的主语是the time，是第三人称单数；并且根据句子的时态，要选一般现在时。

16.Having checked the doors were closed, and _____all the lights were off, the boy opened the door to his bedroom.

A.     why             B. that                 C. when             D. where

【解析】B本题考查宾语从句的连接代词。that 引导的宾语从句，若有两个或两个以上，只有第一个that可以省略。Having checked the doors were closed中省略了that。

15.A woman tearfully explained _____she had recently lost her husband in a car accident.

A.     when            B. how                 C. why              D. where

【解析】B：与A、C相比，B项表示“如何“之意，更具概括事件的时间、地点等过程全貌。