(I ) This is ___ car This car is (He ) Those are ___ shoes Those shoes are ___
(They) This is pencil This pencil is
(She) That is umbrella That umbrella is
(We) These are ___ books These books are
(You) That is computer That computer is
( Ernest) This is pen This pen is ___
(Jessica) Those are carrpings Those carrpings are
( som and I ) These are colors These colors are
(Susan and Mike) That is radio That radio is

(I ) This is my car. This car is mine.
(He ) Those are his shoes. Those shoes are his.
(They) This is their pencil. This pencil is theirs.
(She) That is her umbrella. That umbrella is hers.
(We) These are our books. These books are ours.
(You) That is your computer. That computer is yours.
(Ernest) This is his pen. This pen is his.
(Jessica) Those are her earrings. Those earrings are hers.
(Sam and I) These are our colors. These colors are ours.
(Susan and Mike) That is their radio. That radio is theirs.

Explanation:

(I) This is my car, because "my" indicates possession and shows that the car belongs to the person speaking. "This car is mine" reiterates that the car belongs to the person speaking.

(He) Those are his shoes, because "his" indicates possession and shows that the shoes belong to the person being referred to. "Those shoes are his" reiterates that the shoes belong to the person being referred to.

(They) This is their pencil, because "their" indicates possession and shows that the pencil belongs to multiple people. "This pencil is theirs" reiterates that the pencil belongs to multiple people.

(She) That is her umbrella, because "her" indicates possession and shows that the umbrella belongs to the person being referred to. "That umbrella is hers" reiterates that the umbrella belongs to the person being referred to.

(We) These are our books, because "our" indicates possession and shows that the books belong to the group of people being referred to. "These books are ours" reiterates that the books belong to the group of people being referred to.

(You) That is your computer, because "your" indicates possession and shows that the computer belongs to the person being spoken to. "That computer is yours" reiterates that the computer belongs to the person being spoken to.

(Ernest) This is his pen, because "his" indicates possession and shows that the pen belongs to the person being referred to. "This pen is his" reiterates that the pen belongs to the person being referred to.

(Jessica) Those are her earrings, because "her" indicates possession and shows that the earrings belong to the person being referred to. "Those earrings are hers" reiterates that the earrings belong to the person being referred to.

(Sam and I) These are our colors, because "our" indicates possession and shows that the colors belong to the group of people being referred to. "These colors are ours" reiterates that the colors belong to the group of people being referred to.

(Susan and Mike) That is their radio, because "their" indicates possession and shows that the radio belongs to the group of people being referred to. "That radio is theirs" reiterates that the radio belongs to the group of people being referred to.