1/The doctor advised my father to build up his _____after th

1/The doctor advised my father to build up his _____after the operation by running slowly for half an hour every day.
A\energy B\strength C\force D\power 选B 为什么?（下同）
2、---Mr Green _____at 8.00 for the important meeting ,but he hasn't turned up so far.
---He may have met with the traffic jam.
A\must arrive B\must have arrived C\should have arrived D\should arrive 选C
3、The case of two missing boys in this area is being_____.
A\looked up B\looked into C\looked for D\looked after 选D
4\Police are now searching for a boy who is reported ti _____since he quarrled with his father.
A\have been missing B\have got lost C\be missing D\get lost 选A
5\According to the report ,Michael Phelps _____the American team to win the gold medal in the men’s 4x100-metre freestyle relay final at the World Aquatics Championships in July ,2009.
A\led B\leads C\is leading D\has been led 选A
6\I look many photoswhen I visited____Lake Superior ,which is ____largest freshwater lake in the world.
A\the ;a B\ 不填;a C\the ;the D\不填;the 选D
7、Don’t come here tomorrow afternoon because we _____a meeting at three o’clock then.
A\will have B\will be having C\are having D\will have had 选B
8、The student was about to give up answering the question ___suddenly he found the answer.
A\unless B\until C\when D\while 选C
9、----Mom,did you see my reference book?
----The one with a red cover It’s ____you left it.
A\there B\there where C\where Dwhere there 选C
10\ The beautiful place is the home ____elephants,where there is a harmonious relationship between people and nature .
A\to B\of C\with D\for 选B
11、The workers worked day and night for about three days ____everything returned to normal.
A\after B\if C、when D\before 选D
12、When he _____to the supermarket,he found his wallet was nowhere.
A\would go B\went C\had gone D\was to go 选D

1.build up one's strength 养精蓄锐,休养生息.固定搭配
2.should have done 本该做…（却没做…）.本题中是 本该在八点到却没到
3.look after 照看,关心,负责.网上可以搜到很少look after the case的例句,多取负责之意.此题个人认为选B也正确,look into the case调查案件.
4.（ti 应该是to吧）此处为完成时,用have done；be missing是固定用发同be lost,失踪,丢失.
5.lead领导,带领.过去式led,过去分词leaded.此处为一般过去时,用过去式led.
6.Lake Superior美国加拿大交界处的苏必利尔湖,专有名词不加the.后一空,最高级前加the.
7.此题很妙.拆开来看,will be + 状态having a meeting,主要和最后的那个then有关.去了then就选A
8.be about to doing+when 正准备…就….固定搭配
9.C,不用多解释了吧,表语从句.实在不行就背住
10.of 表所属关系,大象的家
11.D,也是很常见的句型,翻译为在…之前（可以理解为后一件是前一件事的结果）
12.be to do,打算计划去做…
我一个个手打的,