The first four clues below have something in common that is hinted at in the fifth clue. What is it?

1. DIDGERIDOO
2. WASPISH
3. GOT TOGETHER
4. WATER FEATURE
5. Phrase that might be used when looking at pictures of grow-up child stars.

Answer:

Each clue contains within itself the past and present tense of the same verb:

1. DIDgeriDOo
2.WASpISh
3. GOT toGETher
4. wATEr fEATure
5. THEN AND NOW 

Credit: Jake Halperin
NY Times Crossword
December 11, 2019