more than 70% of the earth's ______ is covered with water
surface
i can use a map to __________
navigate
Those are ____________
sled dogs
climbing a mountain is ________
challenging
That cat is __________ fat.
extremely
I would like to study __________
astronomy
There are 7 _______
continents
There are many planets in our ____________
solar system
A desert is a __________ environment
harsh
The rocket ______
launches
The thunder was so loud that the water _______
vibrated
He can hear an ____
echo