Animals
very large gray animal that has a long, flexible nose
Elephant
a mountain that releases hot gases from the earth
Volcano
The dog is ...... than the cat. (fast)
faster
an animal that has a long, thin body and no arms or legs
Snake
an object that goes around the sun
Planet
Trains are ....... than buses. (terrible)
more terrible
a black-and-white bird that cannot fly, that uses its wings for swimming, and that lives in or near the Antarctic
Penguin
a living structure in the ocean
Coral reef
Games are ...... than exams. (boring)
less boring
a large brownish-yellow cat with black spots that lives in Asia and Africa
Leopard
a place that gets a lot of rain and that has very tall trees
Rain forest
more clearly