It's a or an umbrella.
an
It's long and thin. I use it to make a line.
a ruler
eye/eyes
eyes
What's this?
It's a train
A crab has 8 leg/legs
legs
It's a or an pencil case
a
How many words in this sentence? This is my blue bike.
5 (five)
This is or These are fingers
These are
What's this?
folder
one face/faces
face
I use my ____ to listen to music.
ears
Is this your teddy? Yes, it ___
is