Had I known about this computer program, a huge amount of time and energy ________.
A．would have been saved B．had been saved
C．will be saved D．was saved
If he ________ my advice, he wouldn't have lost his job.
A．followed B．should follow
C．had followed D．would follow
Bob would have helped us yesterday, but he ________.
A．was busy B．is busy
C．had been busy D．will be busy
—I left my handbag on the train, but luckily someone gave it to a railway official.
—How unbelievable to get it back! I mean, someone ________ it.(2011·江苏)
A．will have stolen B．might have stolen
C．should have stolen D．must have stolen
—Pity you missed the lecture on nuclear pollution.
—I________it, but I was busy preparing for a job interview.(2011·福建)
A．attended B．had attended
C．would attend D．would have attended
I ________ through that bitter period without your generous help.(2011·陕西)
A．couldn't have gone B．didn't go
C．wouldn't go D．hadn't gone
