THIS - THAT
A.This is used to refer to a single person, thing, place that is close or near to the speaker.
<-- This computer is easy to use
B.That is used when the person, thing or place is far from the speaker.
That computer is easy to use. ------------------------------->
THESE-THOSE
A.These is the plural form for this.
<------These computers are easy to use.
B. Those is the plural form of that.
<-------------------------------------------- Those computers are easy to use.
QUESTION:
Complete: _______ bird is flying in the sky