Fill in the Blanks Fill in the Blanks: 10 Common IdiomsOnline version Guess the missing words in popular idiomatic expressions in this fun and educational game! by Tina Goodroe 1 spilled cry arm Kick bag dime cat Bite Jump Piece Hit leg 10 common idioms : 1 . Break a . 2 . the hay . 3 . of cake . 4 . Costs an and a leg . 5 . Let the out of the . 6 . the bullet . 7 . A a dozen . 8 . Don't over milk . 9 . on the bandwagon . 10 . the bucket .