1Was it___A___she said or something that she did_____you were angry at so much? 
A。 what that  at which  at what D。what which 
第一空是名词性从句。
  第二空是定语从句又有 be angry at something结构。所以是两个定语从句连用。使用that来应对不定代词的先行词。
2If you always aviod being asked questions by the teacher,it means you__A__chances for improvement。
   
 e turning down拒绝  e finding out C。turn  nd out 
3。Engines are to machines__A__hearts are to animals。 
 正如  at C。what D。
  which 
4。I just wonder___D__that makes him so excited。 
A。why it does B。what he does C。how it is D。what it is 
注意横线内容充当宾语从句的主语功能，小谓语是makes 。
  
5。Someone who lacks staying power and perseverance is unlikely to____A__a good researcher。 
 ke B。turn加to  t 加 ow加to
6。
  These seems__D__every hope that business will get better。 
  if  ke   be  at 
后面使用陈述语气所以前面不能使用虚拟语气。排除A
7。The secretary worked late into the night,__B__a long speech for the president 
  prepare  eparing现在分词做原因状语进一步解释  epared D。
  was preparing 。