A.had to be printed B.should have been printed
C.must be printed D.should be printed
28.The millions of calculations involved,had they been done by hand, all practical value by the time they were finished.
A.could lose B.would have lost C.might lose D.ought to have lost
29.A safety analysis the target as a potential danger.Unfortunately,it was never done.
A.would identify B.will identify
C.would have identified D.will have identified
30.Id rather you by train,because I cant bear the idea of your being in an airplane in such bad weather.
A.would go B.should go C.went D.had gone
31. When Edison died,it was proposed that the American people all power in their homes,streets,and factories for several minutes in honor of this great man.
A.turn off B.turned off
C.would turn off D.had turned off
32.I apologize if I you,but I assure you it was unintentional.
A.offend B.had offended
C.should have offended D.might have offended
33. for the timely investment from the general public,our company would not be so thriving as it is.
A.Had it not been B.Were it not
C.Be it not D.Should it not be
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