Does it begin with letter y?
no
What letter is it?
Letter z
what is it?
zero
What animal is it?
yak
Which letter is missing?_ acht
y
Does it begin with letter y?
Yes
Does it begin with letter z?
No
What is this?
It's a zipper.
Which letter is missing? _oo
Letter z
What is it?
It's a zebra
What is it?
It's a yo yo.