Roses smell sweat.

Roses are sweat when they are smelt

Roses were sweat when they are smelt

Roses will be sweat when they are smelt

Roses should be sweat when they are smelt

All of the above

Active Voice: The surface feels smooth.

Passive Voice: The surface is smooth when it is felt.

Active Voice:Roses smell sweat.

Passive Voice: Roses are sweat when they are smelt.