Question

Do not make a noise into the passive voice

Answer 1

$\rm \underline{ Question }$

Do not make a noise into the passive voice

$\rm \: in \: passive \: voice$

Do not make a noise will become

$\rm \red{let \: no \: noise \: be \: made}$

Answer 2

The passive voice of "Don't make a noise." will be: "Let no noise be made."