Question not asked in this puzzle's theme words

Question:

Answer:

2 possible answers to

Answers with 3 characters:

Answers with 4 characters:

WHEN

Similar Crossword Questions:

Famous last words (and homophonically, a hint to this puzzle's theme)
Engagement gift (both words suit this puzzle's theme)
Choice words swapped in this puzzle's theme answers
"Magic" words that are the theme of this puzzle
Place to use this puzzle's theme words?
Alternative words used as alternatives for each other in this puzzle's theme answers
What the self-contradictory words found in this puzzle's theme answers are examples of
Place to fix this puzzle's theme words?
Question that follows "O Brother" in film ... and a hint to this puzzle's theme
Theme word inside this puzzle's theme words
Attendance check, and a hint to the puzzle theme in the first words of the starred answers
Subject of the Final Jeopardy! question that knocked out Ken Jennings after a record 74 wins ... or a hint to this puzzle's theme
Character who asked this puzzle's question
Number of times this puzzle's theme word appears diagonally in the grid (to complete the puzzle, shade those words plus the Down answers that begin where they meet)
Like the theme words in this puzzle?
Question asked by a customs officer or a kid on Christmas ... with a hint to this puzzle's circled squares
Bettor's question, and a hint to this puzzle's theme
Traditional location of one of this puzzle's theme words
What this puzzle's theme words aim to do
Something to do on Arbor Day (and a hint to this puzzle's theme)
"Fun, Fun, Fun" singers (and this puzzle's theme)
Hidden theme of this puzzle
"That's repulsive!" ... or a hint to this puzzle's theme
Question asked in a foggy state
Finding from the "fifths" taken from this puzzle's theme answers