They have done much of the work, when will be finished?

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has so much been done have so much been done has been done so much so much has been done

will have done could have done must have done may have done

could do could have done must have done should do

could do could have done must have done should do

will have done could have done must have done may have done

could do must have done could have done should do

could have done must have done could do had done

are likely to have to can are bound to

could have done couldn’t have done must do must have done

will have done could have done must have done may have done

remains to be done is remained to do remains to do is remained to be done

will have done could have done must have done may have done

could do could have done must have done should do

could do should do must have done could have done

could do could have done must have done should do

could do could have done must have done should do

could could have done must have done should do

are doing have done did had done

would be done; doing is done; to be done will be done; to do is done; to do