46. Back to the drawing board - Star over
47. Burst your bubble - Disappoint someone
48. Go down in flames - Fail spectaculary
49. Costs an arm and leg - Very expensive
50. Pull someone's leg - Tease or joke with
51. Spill the beans - Share a secret
52. Go to extra mile - Extra efort
53. Keep an eye on - Watch carefully
54. At the drop of a hat - Instantly
55. Hold your horses - Wait a moment
56. Burn the midnight oil - Work late