Question

you must be truthful(negative without changing meaning

Answer 1

You must not lie .

DETAILS :

We have been asked to change the sentence to negative .

At the same time , we must keep in mind that the meaning is not changed.

Hence addition of not changes it but not the meaning .

So the answer is :

You must not lie .

Answer 2

You must not lie

YOU HAVE TO CHOOSE THE MAIN WORD FROM THE SENTENCE AND CHANGE INTO OPPOSITE OR FROM THE SENTENCE USING NOT.

I HOPE YOU ARE SATISFIED WITH THIS:):):):):