He is 'up to his ears' in work and cannot possibly see you now.

He is 'up to his ears' in work and cannot possibly see you now. Correct Answer fully occupied with

Up to His Ears Extremely busy with something; deeply involved in something. Example: There's no way I can take a vacation right now, I'm up to my ears in work at the moment!
Bissoy MCQ

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He is up to his ears in work and cannot possible see you.