1 They didn't know why she _____ the glasses .

1 They didn't know why she _____ the glasses .
A has broken B had broken C have broken D break
2 Mr.Smith ,I should tell you this is the fifth time you _____ me for my twin sister.A have mistaken B are mistaking C had mistaken D are mistaken
3 After the flood ,no house in the village _____ .
A left standing B was left to stand C was remained standing D remained standing
4 This kind of coat _____ quickly nowadays .
A sells B is sold C are sold D is selling
5 It is said that the old coins _____ under the earth for about 100 years by the time they were discovered .
A had buried B had been buried C buried D were buried
6 He suddenly found the wallet he had just put in the bag _____.
A missing B missed C to miss D being missed
7 China's Liu Xiang broke the world record of the 110 meters hurdles ,thus ____ him world-famous overnight .
A to make B made C buying D to be bought
8 Nobody but doctors or nurses and those ______ by Dr.Smith is allowed to enter the patient's room .
A invited B are invited C being invited D who invited
9 _____ to hosipital in time ,the patient infected with bird flu was saved at last.
A Taking B Having taken C Being taken D Having been taken
10 I keep writing my blog .It's fun _____ and _____ .
A to be read ,to be reading B to read ,to be read
C read ,be read D read ,being read

1 B 明显的退两步,主句didn't退一步,打破（也不知是眼镜还是玻璃杯的复数）又退一步,用过去完成时态
2 A time前有序数词,定从用完成时态,注意主句should并不是过去式,所以用现在完成就可以了
3 D remain与house是逻辑主谓,后面是doing分词作状语
4 A 主动表被动,且nowadays（如今）并不强制（甚至可以说不要求）用进行时
5 B “发现古钱币”是时间上的退一步,“被埋藏”还在“发现”之前,所以是过去完成时态的被动语态
6 A 形容词宾补,注意：不是动词的ing形式
7 语法上应该是doing格式,但buy意思及用法都不太合适啊（虽然buy有“获得”意,但没见过buy后有形容词宾补）,是不是making?
8 A 过去分词短语做后置定语
9 D 三个属性,逻辑被动,完成,以及整个状语和句子主语的逻辑主谓关系
10B and连接两个并列的真正主语,整句话是说“我一直在写博客,去阅读（别人的博客）和（自己的博客）被阅读（这两件事）都挺有意思的”