Gasoline is to car as food is to ...
human
Water is to river as sand is to ...
desert (or beach)
Glove is to hand as sock is to ...
foot
Tree is to forest as star is to ...
galaxy (or space)
Heart is to love as brain is to ...
think
Sail is to sailboat as wing is to ...
airplane
Fuel is to fire as oxygen is to ...
life
Feather is to bird as fur is to ...
mammal
Chef is to kitchen as conductor is to ...
orchestra
Pen is to writing as paintbrush is to ...
painting
Honey is to bee as milk is to ...
cow
Keyboard is to computer as steering wheel is to ...
car
Key is to lock as password is to ...
computer
Roots are to plants as foundation is to ...
building
Battery is to remote control as charger is to ...
smartphone
Wheel is to bicycle as oar is to ...
rowboat
Tires are to car as shoes are to ...
feet
Petal is to flower as leaf is to ...
tree
Umbrella is to rain as sunscreen is to ...
sun
Glasses are to eyes as headphones are to ...
ears
Moon is to night as sun is to ...
day