Figure 1: First puzzle set:

Figure 2: Second set of puzzles:

Answers:

Puzzle 1:

1. sandbox                                         2. man overboard                 3.   I understand                    

4. Reading between the lines        5. Long underwear                 6. Crossroads

7. Downtown                                     8. Tricycle                                9. Split-level

10. three degrees below zero        11. neon lights                       12. circles under the eyes

13. high chair                                     14. paradise                         15. touchdown

16. six feet underground                  17. mind over matter           18. He's beside himself

19. backward glance                         20. Life after death            21. GI overseas

22. Space program                           23. See-through blouse    24. Just between you and me

Answers to Puzzle2:

1. Split-second timing                             2. a long letter from home        3. all between us is over now

4. six of one, half a dozen of another    5. It's a small world after all    6. Unfinished symphony

7. blood is thicker than water                 8. Seven up                                 9. Condescending

10. scrambled eggs                                 11. no two ways about it        12. line up in alphabetical order

13. a gross injustice                        14. the odds are overwhelming    15. he's an exponent of capitalism 

16. astronaut                                     17. ambiguous                             18. A wolf in sheep's clothing

19. sailing, sailing, over the seven seas    20. Assassinate         21. For no apparent reason whatsoever

22. A little missunderstanding between friends    23. A bad spell of weather