I

have

Example: I have a headache.

You

have

Example: You have a stomachache.

He

has

Example: He has a toothache.

She

has

Example: She has an ear infection

It

has

Example: It has two windows (talking about a house).

We

have

Example: We have a house.

You

have

Example: You have a family.

They

Have

Example: They have a business.