______ in the queue for half an hour, Tom suddenly realized that he had left his

______ in the queue for half an hour, Tom suddenly realized that he had left his

题型:不详难度:来源:
______ in the queue for half an hour, Tom suddenly realized that he had left his wallet at home.
A.To waitB.Have waited 
C.Having waitedD.To have waited

答案
C
解析
此题考查非谓语形式。该分词短语补充成完整的句子是:When he had waited in the queue for half an hour,Tom suddenly realized that he had left his wallet at home.分词作状语,分词的逻辑主语就是句子主语。由于分词短语的动作在先,所以用现在分词的完成形式。
举一反三
Don’t sit there _______ nothing.Come and help me with this table.
A.doB.to do
C.doingD.and doing

题型:不详难度:| 查看答案
The old man, _______ abroad for twenty years, is on the way back to his motherland.
A.to work B.working 
C.to have workedD.having worked

题型:不详难度:| 查看答案
—Is there any news about my promotion?
—I regret _______ you that we’ve chosen someone else for the job.
A.tellingB.to have told
C.to tellD.to be telling

题型:不详难度:| 查看答案
_______ the programme, they have to stay there for another two weeks.
A.Not completing
B.Not completed
C.Not having completed 
D.Having not completed

题型:不详难度:| 查看答案
Thinking about the fact that I was not prepared well enough,and _______ to lose my face,I gave up this year’s civil service exam.
A.didnt wantB.not wanted
C.not wantingD.not to want

题型:不详难度:| 查看答案
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