a. To move people away from a building, e.g.
because of the fire.
b. To save someone from danger.
c. Someone who is present when something happens. e.g. an accident.
d, Someone who works onn the beach to help swimmers in danger
a. You look tired. You are working too much.
b. The cake is delicious. How did you make it?
c. The man looked frightening.I was afraid of him.
d. It s almost midight. I'm sleepy.