had been cancelled
having been cancelled
were cancelled
have been cancelled
第1题：
We were infordmed that our flight ____ because of the mechanic failure
A.have canceelled
B.canceelled
C.have been canceelled
D.had canceelled
第2题：
______ many times, but he still couldn't understand it.
A. Having been told
B. He was told
C. Though he had been told
D. Having told
第3题：
A.Had there been
B.If there was
C.Were there to be
D.If there would have been
第4题：
If only it ()so cold, perhaps I, too, ()more initiative.
A、had been,have shown
B、have been,would show
C、had’t been,cound't have shown
D、had't been,could have shown
第5题：
A、were cancelled/ to take
B、having been cancelled/ take
C、have been cancelled/ take
D、had been cancelled/ to take
第6题：
All the machines ______by the end of this month.
A. would have been repaired
B. were repaired
C. will have been repaired
D. were being repaired
第7题：
All the money ______, Frederick started looking for work.
A. having spent
B. has been spent
C. having been spent
D. had been spent
第8题：
So many directors_________ , the board meeting had to be put off till next Monday.
A． were absent
B． being absent
C． been absent
D． had been absent
第9题：
Hardly had he arrived at the airport____he was told that the flight had been cancelled.
A: than
B: when
C: before
D: then
第10题：
__________, I would take an umbrella with me.
A、Had I been you
B、I were you
C、Were I you
D、I had been you