Simile and Metaphor

What are the two things being compared in the following sentence?
I am as hungry as a bear recently awakened from hibernation.

• "I" and "hungry" 
• "I" and "a hungry bear awakened from hibernation"
• "Bear" and "hibernation"
• "hungry" and "hibernation"

What is the meaning of the following simile?
"as hungry as a bear recently awakened from hibernation"

• Someone is really hungry
• Someone is slightly sleepy
• Someone is extremely sleepy.
• Someone is slightly hungry. 

What two things are being compared in the following metaphor?
Her diary was her best friend, guarding her secrets quietly.

• "best friend" and "secrets"
• "diary'' and "secrets" 
• "Diary" and "her best friend"
• "her" and "diary" 

What is the meaning of the following metaphor?
Her diary was her best friend, guarding all of her secrets. 

• Her best friend was writing in her diary.
• Her diary was open so that everyone could see her secrets
• Her secrets weren't safe in her diary.
• Her secrets are safe because they are written in her diary, which could not talk. 

Simile or Metaphor?
This house is as clean as a whistle.

• simile
• metaphor

Simile or Metaphor?
My brother was boiling mad.

• simile
• metaphor

Simile or Metaphor?
The assignment was a breeze.

• simile
• metaphor

Simile or Metaphor?
She is as thin as a toothpick.

• simile
• metaphor

The baby girl’s smile was the sun on dark days. 
What does the metaphor mean above?

• The baby girl's smile made other people happy.
• When the baby girl smiled the sun would rise. 
• The baby never smiled. 
• The baby girl's smile made the moon come out. 

What is the meaning?
The football player was as strong as an ox as he tackled the quarterback. 

•  He was extremely strong.
• He smelled like an animal.