There are __________ colors in a rainbow.
The Eiffel tower is in the city of ______________.
This country is home to the kangaroos.
The opposite of expensive is ____________.
This animal is the tallest in the world.
The scientist who study about rocks is called __________.
How many continents are there in the world?
Two of the planet's name begin with the letter M are:
Acorn comes from the _____________ trees.
Sharks have ________ bones.
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