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
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