1.He was so deep in thought，thinking of the problem ________ he knocked into the tree without noticing it.
A.when B.while
C.because D.that
答案 D
解析 考查状语从句的引导词。so...that...表示“如此……以致……”，引导结果状语从句。句意为：他思考问题太投入了，以致一不留神儿撞到了树上。
2.We had to be patient because it ________ some time ________ we got the full results.
A.has been;since B.had been;until
C.was;after D.would be;before
答案 D
解析 在“it+be+一段时间+before/after/since+从句”句型中，before从句中的动作经过一段时间后才会实现;after从句中的动作发生后已经过去了一段时间;since从句中的动作完成后到现在已经有一段时间了。结合题意可知，答案为D项。
3.—Someone wants you on the phone.
—________ nobody knows I am here.
A.Although B.And
C.But D.So
答案 C
解析 前半句句意为：有人给你打电话，后半句句意为：没有人知道我在这儿。根据句子意思可知前后两句明显为转折关系，因此选C项。
4.—What do you think I should wear for such a formal press conference?
—Dress ________ you like.
A.how B.what
C.whatever D.however
答案 D
解析 考查状语从句。dress作及物动词时，宾语为人;本题中的dress为不及物动词，所以后面应该接一个状语从句。答语句意为：你想怎么穿都行。
5.________ the fire breaks out，he is the first to arrive at the scene.
A.Every time when B.Moment
C.No matter whenever D.Every time
答案 D
解析 句意为：每一次发生火灾，他总是第一个到达现场。every time用作连词，引导时间状语从句。
6.In some places women are expected to earn money ________ men work at home and raise their children.
A.but B.while
C.because D.though
答案 B
解析 while并列连词，意为“而，却”，表示转折。
7.The engineers are so busy that they have no time for outdoor sports activities，________ they have the interest.
A.wherever B.whenever
C.even if D.as if
答案 C
解析 句意为：工程师们都很忙，以致于他们没有时间去做户外运动，即使他们有兴趣。even if即使，符合句意。
8.Don’t be afraid of asking your teachers for help ________it is needed.
A.as B.since
C.unless D.when
答案 D
解析 考查连词。句意为：如有需要，不要害怕向老师求助。此处when相当于if，表示条件，其他不符合语意。
9.Find ways to praise your children often，________ you’ll find they will open their hearts to you.
A.till B.or C.and D.but
答案 C
解析 分析前后分句逻辑关系，是条件或假设关系，而且“祈使句+and/or/otherwise+陈述句”是固定句型，所以选C项。
10.If you are traveling ________ the customs are really foreign to your own，please do as the Romans do.
A.in which B.what
C.when D.where
答案 D
解析 句意为：如果你在一个风俗习惯与你的风俗习惯完全不同的地方旅游，请入乡随俗。此处用where引导地点状语从句。
11.________tomorrow，our ship will set sail for Macao.
A.However the weather is like
B.However is the weather like
C.Whatever is the weather like
D.Whatever the weather is like
答案 D
解析 考查whatever引导的让步状语从句。whatever=no matter what修饰名词weather。
12.John plays basketball well，________ his favorite sport is badminton.
A.so B.or C.yet D.for
答案 C
解析 句意为：约翰篮球打得很好，然而他最喜欢的运动是打羽毛球。四个选项中表示转折的连词只有yet。
13.I had no idea of the exact address of Xinhua High School ________I was outside its front gate.
A.when B.after
C.until D.because
答案 C
解析 考查状语从句。根据语意“我到新华中学的校门口时才知道这学校的准确地址”可知C项正确。
14. ________you’ve experienced it，you can’t understand how I felt.
A.Once B.Because
C.Unless D.While
答案 C
解析 考查状语从句。句意为：如果你没体验过，你不会知道我的感受。unless=if not如果不，引导条件状语从句。
15.—Haven’t seen Lucy recently，what’s happened?
—Oh，it’s more than two months ________ she worked here.
A.which B.that
C.before D.since
答案 D
解析 考查It’s...since...结构，表示动作自过去发生至今有多久。但该结构从句中谓语动词的性质决定最终的意义。从句中谓语动词为瞬间性动词，则表该瞬间动作发生至今时间多久;若从句中谓语动词为延续性动词，则表示该延续动词动作终止至今时间多久。work属延续性动词，该句句意为：她不在这儿工作已经有两个多月了。显然，本题的答案为D项。
16.________ you may have，you should gather your courage to face the challenge.
A.However a serious problem
B.What a serious problem
C.However serious a problem
D.What serious a problem
答案 C
解析 根据句意“无论你有多么严重的问题，你都应该鼓起勇气面对挑战。”，而however表让步时其顺序应是：however+形容词+主语+谓语。however作连接副词，相当于no matter how，后接形容词或副词，意为“无论，不管”，引导让步状语从句，其顺序为“however+形容词、副词+主语+谓语”。
17.I will put the book________you placed it and make a mark at the place________I put it.
A.where;at which B.at which;at which
C.where;which D.at which;where
答案 A
解析 前后两个从句都表示地点的含义。是定语从句还是地点状语从句，做题的关键是看有没有表示地点的名词作先行词。如果有表示地点的名词，就是定语从句;如果没有便是地点状语从句。该题中第一个从句为地点状语从句，第二个从句为定语从句，因此答案为A项。
18.________there is no law stating how you may dress，not all fashions are respectable.
A.Because B.Since
C.While D.Unless
答案 C
解析 考查连词的用法。句意为：尽管没有法律规定你怎样穿戴，但是并不是所有的时尚都是值得尊敬的。while尽管，符合句意。because因为;since既然;unless除非。
19.Bring the flowers into a warm room ________ they’ll soon open.
A.or B.and C.but D.for
答案 B
解析 本句为“祈使句+and/or+陈述句”句型。根据题意，应为顺承关系。故选B项。
20.________，his idea was accepted by all the people at the meeting.
A.Strange as might it sound
B.As it might sound strange
C.As strange it might sound
D.Strange as it might sound
答案 D
解析 此处as引导让步状语从句，此时常把作表语的形容词提前到句首。
21.—What do you think of it?
—Well，it’s worth doing ________ the result is satisfactory.
A.the moment B.as soon as
C.once D.so long as
答案 D
解析 so long as意思是“只要”，引导条件状语从句。
22.Please arrange an interview with the manager tomorrow，or ________ it is convenient to him.
A.whenever B.however
C.whichever D.wherever
答案 A
解析 句意为：明天请安排一次对经理的采访，或者在他方便的任何时间。本句的后半句句子完整，所以应该使用连接副词，结合句意可知应选A项。
23.The agent was about to sign his name to the document ________，to our surprise，a stranger broke in to prevent him.
A.while B.when
C.as D.until
答案 B
解析 when此处为并列连词，相当于at that time，可译为“这时(突然)……”。
24.Goals have to be realistic ________ students can reach them and feel a sense of achievement.
A.so long as B.so that
C.now that D.even though
答案 B
解析 空格后的句子是空格前句子的目的，所以用so that。句意为：目标应该现实一点，这样学生们就能实现它，并有成就感。
25.He found it increasingly difficult to read，________ his eyesight was beginning to fail.
A.though B.for C.but D.so
答案 B
解析 句意为：他发现读书越来越困难，因为他的视力开始下降。for表示原因，符合句意。
