You should do that. Change into passive voice.
AThat should be done it.
BThat should be done.
CThat should done.
DThat should be do.
AThat should be done it.
BThat should be done.
CThat should done.
DThat should be do.
Related Questions:
The passive form of . " Do they write homework ?"
Spot the error.
(a) When the military general was shot dead / (b)people were run / (c)here and there /(d) to save themselvses / (e) no error.