She unknowingly had a run in her stockings.

The electrical wire is swaying in the wind.

This cold is very contagious, so please be careful not to spread it to others.

He closed the door firmly.

This disease is highly contagious.

Prevention of infectious diseases affects not only individual health but also the health of the entire society.

He admitted that it is difficult to execute the plan, saying 'it is easier said than done.'

Well then, I'm off.