Had I know 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
A: would have been saved
B: had been saved
C: will be saved
D: was saved
举一反三
- about this computer program, a huge amount of time and energy would have been saved.
- Had the reader known about this computer program, a huge amount of time and energy ________.
- It could have saved me some trouble （） about it. A: had I known B: I had known C: did I know D: I knew
- Had I known about this computer program, a huge amount of time and energy_______ .
- 800 people have been saved by theorganization.