stem: roller coaster fun
choice: tooth mouth
choice: go to restaurant eat
choice: earth world
choice: seaweed soup seaweed
choice: doctor help patient
choice: barbecue cook food
choice: buy product spend money
choice: sex three letter word
choice: dog chew bone
choice: bad for you smoke
choice: head body
choice: house roof
choice: person kill
choice: do some exercise do cool-down
choice: smoke bad for you
choice: remember phone number call someone
choice: ride bike pedal
choice: heart love
choice: hunger eat