1.He ____ the person referred to be put in prison.
A.said   B.suggested   C.agreed   D.thought
答案B。为什么不选A？
解答：referred to 修饰the person.此句可简化为：He____ the person be put in prison,可见此句要用虚拟语气。Say后面接宾语从句不能用虚拟语气，而suggest 可以。可以在词典里查单词suggest用法。

2.--Did you look up the time of trains to Shanghai?
  --Yes,the early train is _____ to leave at 5:30 am.
A.likely    B.about   C.possible   D.due
解答：解答此题要搞清楚各个短语的意思：be likely to:很有可能；be about to :即将；possible应用于句型：it is possible that :…有可能；be due to: 由于。根据句意应选B选项。

3.--My son failed to be accepted by the firm after the interview.
  --Now that he wasn't well prepared,he might as well_____.
A.not try   B.not to have tried   C.not have tried   D.not to try
答案C。为什么不选A？
解答：此句应该用虚拟语气，might have done表示推测“my son failed”的原因。

4.He must have had an accident,or he _____then.
A.would have been there   B.had to be there   C.should be here   D.would be here
答案A。为什么不选C？
解答：此句也为虚拟语气。Would have done表示对要发生的事的推测。建议你去系统性的查一下虚拟语气的用法。

5._____nothing more to do ,she got up and left the room.
A.There was   B.Being   C.There being   D.As there being
答案C。为什么不选A？
解答：此句为独立主格结构。句子中间有一逗号，说明此句为单句。可以这样理解：Because there was nothing more to do ,she got up and left the room.如果改为两个句子，必须加连词because.

6._____was announced by Samaranch,the former president of IOC,Beijing will host
the 2008 Olympic Games.
A.It   B.That   C.What   D.As
答案D。为什么不选A？
解答：as做先行词可代指整个句子。本句意思是：北京举办2008年奥运会，这是由IOC前任主席Samaranch宣布的。可颠倒顺序帮助理解：Beijing will host the 2008 Olimpic Games,____was announced by Smaranch.