Write four sentences using the subject "snowboarder" as a singular noun, a singular possessive noun, a plural noun, and a plural possessive noun.
1. singular noun: That snowboarder can really do amazing stunts! 2. singular possessive noun: That snowboarder's legs are really muscular. 3. a plural noun: Snowboarders have to be really talented. 4. a plural possessive noun: Snowboarders' costumes have to be very warm.