Contraction before “be great” Crossword Clue

 The contraction before "be great" is 'll. This is a contraction of the words "will" and "be."

In the context of the crossword clue, the contraction is being used to indicate that the person or thing being described is expected to be great. For example, "She'll be great at her new job."

The contraction "'ll" can also be used to indicate future tense, as in "I'll be home soon."

I hope this helps! Let me know if you have other requests or questions.