He must send the letter.(Change into passive)
AA letter must be sent by him.
BThe letter must sent by him.
CA letter must been send by him.
DThe letter must be sent by him.
AA letter must be sent by him.
BThe letter must sent by him.
CA letter must been send by him.
DThe letter must be sent by him.
Related Questions:
Identify the passive form of the given sentence.
When did they build these houses?