Thunder roared, and lightning ran.

That disease is caused by a mutation.

I was surprised when I saw his dirty room.

I bought new at-home clothes.

The adult son who still lives at home is causing trouble for his parents.

The room rent is too high, so I'm looking for a new apartment.

He was holding an old lantern in his hand.

This room is too dark to see anything without a lamp.

The street lights are illuminating the darkness.

This smartphone has a power-saving mode.