1．(2011?东北三省四市联考)—What’s that terrible noise，David?
—Oh，I forgot to tell you.The new machines in the nearby plant________.
A．were tested　　　 B．will be tested
C．are being tested　　　 D．have been tested
解析：　考查动词的时态。根据问句中的What’s that terrible noise 可知，这里应该用进行时态，噪音是机器正在被检测时发出的，所以用现在进行时的被动语态。
答案：　C
2．(2011?北京西城模拟)The attackers were arrested and didn’t know where they________.
A．would take　　　 B．are taken
C．were being taken　　　 D．will be taken
解析：　句意为：袭击者被捕了，他们不知道正被带往何处。根据didn’t know 可知，空格处也应该用过去的某种时态，所以B、D不正确；根据句意可知此处用被动语态，故选C。
答案：　C
3．(2011?南京模拟)People begin to know that most environmental problems exist because necessary measures for preventing them________taken in the past.
A．are not　　 B．were not
C．hadn’t been　　　 D．wouldn’t be
解析：　句意为：人们开始了解到由于在过去没有采取必要的预防措施从而造成了大多数的环境问题。in the past暗示出用过去时态；hadn’t been 指在一个过去的动作或时间之前发生的事情；wouldn’t be 表过去将来，故B项正确。
答案：　B
4．(2011?日照市调研考试)—Monitor?
—I’m not monitor of our class.I________with the teacher until the monitor is elected.
A． will just help　　　 B．am just to help
C．am just helping　　 D．have just helped
解析：　考查时态。下句意为：我只是在帮助老师，直到选出班长为止。根据上下句语意可知，此处用现在进行时，表示答话者当时所处的状态。
答案：　C
5．(2011?南京第一次模拟)—I hear you________at Smith’s.
—Yes，I________there for about three months.
A．work；had been working B．worked；was working
C．are working；have been working D．worked；have worked
解析：　本题考查时态。听说你正在Smith’s 上班，因此应该使用现在进行时态；我在那里已经工作大约三个月了(可能还会持续下去)，因此需要使用现在完成进行时态。
答案：　C
6．(2010?海淀区第二学期期中练习)—Why didn’t you come to the cinema with us last Saturday?
—Oh，sorry.But I________the film.
A．see　　　 B．saw
C．have seen　　　 D．had seen
解析：　考查动词的时态。由语意可知，这个电影在上周六(last Saturday)之前就已经看过了，也就是说动作发生在“过去的过去”，因此应该用过去完成时。
答案：　D
7．A big step ________to strengthen China’s health care systems since we launched an effort in 2008.
A．has been taken　　　 B．is being taken
C．was taken　　　 D．had been taken
解析：　考查时态。since(自从)所在的从句用了一般过去时，主句一般用现在完成时。
答案：　A
8．(2011?哈尔滨检测)I have been on diet for months and next time you see me，I ________five pounds.
A．will have lost　　　 B．will lose
C．have lost　　　 D．am losing
解析：　本题考查动词时态。句意为：我已经减肥好几个月了，等下次再见我时，我就会轻五磅。根据语境知句子要用将来完成时，故A项正确。
答案：　A
9．(2011?苏州一模)—Are you going to further your studies after graduation?
—Well，I________yet.I might make some other choices.
A．didn’t decide　　　 B．haven’t decided
C．don’t decide　　　 D．hadn’t decided
解析：　本题考查动词时态。从答语：也许还有别的打算可知，目前还没有做出决定，故用现在完成时。
答案：　B
10．(2011?陕西宝鸡检测)Mary，I should tell you it is the third time that you________ your homework.
A．forgot to do　　　 B．forgot doing
C．have forgotten to do　　　 D．had forgotten doing
解析：　考查时态和非谓语动词。“It is(was)the＋序数词＋time＋that从句”，表示“是某人第几次做某事”，在此句型中，若前面为it is，则that 从句用现在完成时，若前面为it was，则that 从句用过去完成时；而forget to do sth.表示忘了应去做某事，forget doing sth.表示忘了已做过某事。根据语意可知此题应选C。
答案：　C
11．—We thought he would have won the game.
—What a pity！He ________too nervous when playing.
A．had been　　　 B．has been
C．was　　　 D．would have been
解析：　考查动词时态。句意为：他当时太紧张了。答语是对过去事实的陈述，用一般过去时。
答案：　C
12．My headache________me.I thought it was going away，but now it’s getting worse and worse.
A．is killing　　　 B．was killing
C．kills　　　 D．killed
解析：　考查时态。从now 可知：我现在头疼得厉害。
答案：　A
13．Tom is now in our class，but he once________in Westbrook High School for a term.
A．has studied　　　 B．studied
C．had studied　　　 D．studies
解析：　考查时态。句意为：汤姆现在在我们班，但他曾经在韦斯特布鲁克高中呆过一个学期。从once可知，用一般过去时，一般过去时也可以和一段时间连用。
答案：　B
14．—When did you move to Sanya?
—In 2008.But I________in Tibet for 8 years.
A．has worked　　　 B．has been worked
C．have been working　　　 D．worked
解析：　考查时态。由题干可知答话人在2008年搬到三亚之前曾在西藏工作过8年，叙述的是过去的事实，故应用一般过去时。
答案：　D
15．—Can you give some advice on what I said just now?
—Sorry.My mind ________.
A．is wandering　　　 B．was wandering
C．has wandered　　　 D．has wandered
解析：　考查动词的时态。从语境可知“刚才你说话的时候，我走神了”，此处强调“过去某个时刻正在进行”的状态，所以用过去进行时，答案选B项。