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