My grandfather spends most of his time _______ because he loves nature.
| A．outdoor | B．outdoors | C．indoor | D．indoors |
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 |