I took a still photograph of the sunset.

The chemical composition of the substance is still unknown.

I still have a landline at home.

The umorigenicity of the drug is still under investigation.

The pathogenesis of the disease is still not fully understood.

The pathogenicity of the virus is still being studied.

She still has a babyish face.

This superstition still lingers on among them.

I ascertained that he was still alive.

My unpaid liabilities are still $100.