Question

You must to clean your environment
Change into passive voice

Answer 1

Answer:

Your Environment must be cleaned by you.

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Answer 2

Answer:

Your environment must be cleaned by you.

Explanation:

Given sentence,

You must clean the environment.

Sentence after changing to Passive Voice,

Your environment must be cleaned by you.

We, first of all, try to move the subject and object to each other's positions.

Then, we must make appropriate changes in the sentence to make sure that no grammatical error is present in the sentence we have just formed.

Here, the subject is "You" and the object is "Your environment".