Simple
Starts with a F ends with a y and birds do this.
Fly
I start with G and belongs to the -et family
Get
We have land, water and --- transportation
Air
I start with L and belongs to the -et family
Let
Some of us take this to get to school
Taxi
I am a number; I comes after seven
eight
Birds use this to fly
Wings
I am the opposite of up
down
I am a 3D shape
Cube
The turtle is slow, but the cheetah is
fast