Engines are to machines ________ hearts are to animals.
It feels quite __________ to take a bath after work. In other words, you will be __________.
It's fun to see all the food I have made __________ in such a short time.
Although we met with many difficulties, we got back home __________.
Linda gave us a vivid __________ of her trip to Mount Lushan after her return.
Ten years ago the population of our village was __________ that of theirs.