1．(2011年金华高一检测)________it with me and I will see what I can do with it.
A．When left B．Leaving
C．If you leave D．Leave
解析：句意：把它留给我，我看看能怎么处理。“祈使句＋and＋简单句”是固定搭配。
答案：D
2．(2011年开封高二检测)He was about to tell me the secret________someone patted him on the shoulder.
A．as B．while
C．when D．until
解析：when在此处是并列连词，相当于and at that time。句意：他正要告诉我那个秘密，就在那时，有人拍他的肩膀。
答案：C
3．(2011年宜春高二检测)Every time________I go to school，I am usually riding my bike，________I take a bus.
A．when；besides B．/；except when
C．when；except for D．/；except for
解析：句意：每次上学，我通常骑自行车，除了坐公交车的时候。every time引导时间状语从句，意为“每次……”；when引导时间状语从句，意为“当……的时候”。except表“除了……”。
答案：B
4. Rose couldn't concentrate________what she was doing________her family were watching TV.
A．to；when B．on；while
C．for；when D．in；while
解析：考查时间状语从句。concentrate on专注于；while在……的时候/期间。
答案：B
5．The bike hit the tree________I could get off.
A．when B．before
C．until D．while
解析：考查时间状语从句。before在……之前；还没来得及，就……。句意：我还没来得及下自行车，就撞到树上了。
答案：B
6．(2011年嘉兴高一检测)—Did Jack come back early last night?
—Yes.It was not yet eight o'clock________ he got home.
A．before B．when
C．that D．until
解析：考查时间状语从句。句意：……当他到家时还不到八点钟。when引导时间状语从句，表示“当……的时候”。
答案：B
7．(2011年杭州高一检测)He made a mistake，but he corrected the situation________it got worse.
A．before B．when
C．until D．as
解析：考查时间状语从句。句意：他犯了个错误，但是在形势还没变得更糟糕之前就纠正了。before在……之前；趁着。
答案：A
8．(2011年抚顺高二检测)It will be many years________the doctors and medical scientists can find cures for cancer.
A．since B．when
C．before D．until
解析：考查时间状语从句。句意：要过很多年医生和医学家们才能找到癌症的治疗方法。“It will be＋一段时间＋before从句”表示“要过多长时间才……”。
答案：C
9．It is difficult for us to learn a lesson in life________we've actually had that lesson.
A．until B．after
C．since D．when
解析：考查时间状语从句。句意：对我们来说，从生活中吸取经验教训很难，直到我们真正有过那次教训。until“直到……才”，符合句意。
答案：A
10．(2011年北京高一检测)Anne felt nervous________she gave a speech in front of so many students.
A．for the first time B．at the first time
C．the first time D．at first
解析：考查时间状语从句。the first time作连词引导时间状语从句，意为“第一次……时”。for the first time“第一次”，在句中作时间状语；at first“起初”，与句意不符。
答案：C
11．(2011年上海高一检测)Bad habits，________formed，are difficult，and sometimes impossible to shake off.
A．before B．once
C．until D．unless
解析：考查时间状语从句。句意：坏习惯一旦形成，很难，而且有时候不可能去掉。once“一旦”。符合句意。
答案：B
12．________they find you are afraid，they will attack you.
A．If B．Once
C．Unless D．When
解析：考查时间状语从句。once一旦。句意：一旦他们发现你害怕，他们就会攻击你。
答案：B
13．We won't give up________we should fail 100 times.
A．since B．whether
C．even though D．until
解析：考查让步状语从句。even though/if即使；whether“是否”，引导条件状语从句；since“自从”，引导时间状语从句，until“直到……”，引导时间状语从句。
答案：C
14．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
解析：考查让步状语从句。while“而”，表示两种情况的对比。
答案：B
15．As we all know, some people waste food________others haven't enough.
A．when B．as
C．once D．while
解析：考查让步状语从句。while引导状语从句表示两种情况的对比，意为“而”。
答案：D