They are from the Scholastic Dictionary of Idioms by Marvin Terban.
Bed of Roses -- "Compared to my old school, American Fork Junior High is a bed of roses."
Meaning: a wonderful, pleasant situation
Cat Got Your Tongue? -- "Why don't you answer me? Cat got your tongue?"
Meaning: Is there a reason that you're not speaking?
Keep Something Under Your Hat -- "Mr. Wright said he'd tell me who won the class elections if I would keep it under my hat."
Meaning: to keep something secret
With Flying Colors -- "As expected, Braden passed his tests with flying colors."
Meaning: with ease and great success; in triumph
The picture above is from the movie Felix goes to see in the short story.
Extra credit opportunity: Bring me a common idiom for which you have written an original sentence. You may turn in up to five of these for two to three points each. You can find more idioms by asking adults or looking up idioms online. Sites for people who are learning English as a second language often have lists and explanations of idioms.
