Please it's urgent. Answer the below questions What is a metaphor

Below are sentences that contain a metaphor or a simile. In the blank provided,
identify which is used in each sentence by writing metaphor or simile.

1) I am as hungry as a bear recently awakened from hibernation.
2) She was a kite, floating above the confusion around her.
3) Like a silent thief, the dog crept into the kitchen.
4) My thoughts fluttered from subject to subject like a butterfly visiting flowers in a field.
5) The dark, cold and silent room was a tomb.