$@Shinn$

1. Lan...is...my sister.

2. They...are...my cousins.

3. I....am......good at Math.

4. ..Are...you a teacher?

5. ..Is...he a good student?

6. ..Is...it a pen?

7. My friends...is...friendly.

8. I and Mai...are...friends.

9. It....is....a table.

10. We...are...students of Yen Vien Secondary School.

⇒ I : am .

⇒ He , she , it : is

⇒ You , we , they : are .

$1.$ is

 $It,she,he :is$
$2.$ are 

$We,you,they :are$

$3.$ Am 

$I :am$
$4.$ Are

$We,you,they :are$

$5.$ Is

$It,she,he :is$

$6.$ Is

$It,she,he :is$

$7.$ is

$It,she,he :is$

$8.$ are

$We,you,they :are$

$9.$ is

$It,she,he :is$

$10.$ are 

$We,you,they: are$

 Công thức: 
$I :am$

$It,She,he :is$

$We,you,they :are$