It is impossible to do this.
A
Doing this is impossible
B
This is impossible to be done
C
This must not be done
D
This can’t be done
Correct Answer: This is impossible to be done
This is impossible to be done.In the given sentence,
Verb = (am /is /are/ was /were ) +to + verb1
Rule:
Subject + (am /is /are/ was /were ) +to + Be + verb3