“What ___ missing?” Crossword Clue

 The answer to the crossword clue "What ___ missing?" can be IS, ARE, WAS, or WERE.

These words are all verbs that are used to indicate the absence of something.

Is is the present tense of the verb "to be". It is used to indicate that something exists or is present.

Are is the present tense of the verb "to be" in the plural form. It is used to indicate that something exists or is present in more than one.

Was is the past tense of the verb "to be". It is used to indicate that something existed or was present in the past.

Were is the past tense of the verb "to be" in the plural form. It is used to indicate that something existed or was present in the past in more than one.

The specific answer that is correct will depend on the context of the crossword puzzle. For example, if the clue is "What is missing from this sentence?", then the answer would be "is". If the clue is "What were the missing ingredients?", then the answer would be "were".

I hope this helps!