Question

The students must have obeyed their teachers
change into passive voice​

Answer 1

Answer:

The Teacher should be obeyed by their Students.

Explanation:

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Answer 2

The teachers must have been obeyed by their students.

The above sentence is in the active voice. In the solution, the voice has been changed to that of a passive voice.

While making these changes a few things are to be kept in mind. There are as follows-

• There is usually an addition of the word 'by' when a sentence is in the passive voice.
• It is usually placed towards the end of the sentence, before the subject.
• However, this can be avoided only when the subject can be easily assumed or guessed.
• The meaning of the sentence should be left untouched.