Show:
/fl/
/gl/
/sl/
/pl/
/bl/
100
What birds do.
What is fly?
100
What a window is made of.
What is glass?
100
Another word for to fall.
What is slip?
100
A polite word to use.
What is please?
100
Two colors.
What are black and blue?
200
An insect that lives on dogs and cats.
What is a flea?
200
This is used to stick things together.
What is glue?
200
What we do at night.
What is sleep?
200
What you do with a musical instrument. 
What is play?
200
What the wind does.
What is blow?
300
People in ancient times thought the earth was this.
What is flat?
300
What the stars do at night.

What is glow?
300
The opposite of fast.
What is slow?
300
The end of an electrical cord.
What is a plug?
300
A person who can't see is this.
What is blind?
400
Snow falls in the shape of these.
What are flakes?
400
To stare meanly at someone.
What is glare?
400
This word describes icy roads.
What is slippery and/or slick?
400
A fruit.
What is a plum?
400
Another word for mix.
What is blend?
500
The movement of liquids or water.
What is flow?
500
A synonym for unhappy.
What is glum?
500
A synonym for a thin person.
What is slim or slender?
500
What trucks do to snow.
What is plow?
500
Eye lids do this.
What is blink?