She is sick.

She is ill.

I think she is sick.

It's obvious that she's sick.

They say she's sick.

How did you get to know she was ill?

She has been ill for three weeks.

How long has she been sick?

It is said that she is seriously ill.

She has been sick for three weeks.

I think she is sick. She has a temperature.

She looked ill.

She made believe that she was sick.

Mary is sick.

Is she still sick?

She has been ill for a long time and she is still too weak to get about.

She might be seriously ill.

She must have been sick.

She became very ill.

She seemed to have been ill.

It seems that she was ill.

She said that she was ill.

She was ill for a week.

She looks very sick.

My pet is sick.

Her daughter is sick.

I think he is sick.

The nurse is ill.

She cannot have been ill.

Jane is sick in bed.

I think that Yumi is sick.

My mother is seriously ill.

He told me that she was sick.

She was ill for a long time.

She could not come because she was ill.

The baby is crying. I think it is sick.

My mother is sick in bed.

She fell ill, but got well soon.

She was absent from school because she was sick.

But what about when a population is already ill?

I know for certain that Mary is seriously ill.

I cannot milk this cow. It's sick.

The motherland is sick because of corruption.

She was absent from school because of sickness.

Mary is very ill and I'm afraid she is dying.