The oceans will turn into deserts if nothing ________.
A: does
B: had been done
C: will do
D: is done
A: does
B: had been done
C: will do
D: is done
D
举一反三
- If nothing ______, the oceans will turn into fish deserts. A: does B: had been done C: will do D: is done
- The man in prison insisted that he _______ nothing wrong and _________ set free. A: had done, should be B: should do, should be C: had done, had been D: should do, had beend do, had be
- Anyone who had been in your position（）the same. A: had done B: do C: would have done D: will do
- Even if I with you then, I much for you. A: would be; would not do B: were; should not have done C: had been; would not do D: had been; should not have done
- The work_______by the time you get there. A: has been done B: had been done C: will have been done D: will be done
内容
- 0
The homework when they left. A: did B: had done C: had been done D: has done
- 1
The millions of calculations involved, ____by hand, would have lost all practical value by the time they were finished. A: had they been done B: they had been done C: having been done D: they were done
- 2
If I had not been enjoying the work, I______so much of it. A: would not do B: would not have done C: should not do D: should not have done
- 3
Given more attention, the work（） A: had been better done B: will be done better C: was better done D: could have been better done
- 4
She preferred that he _____ it in the kitchen. A: did B: does C: should do D: had done