Eugene Sheffer puzzle clues 2019 Feb 27

• Coffee-break hr Crossword Clue
• 'Don't slouch!' Crossword Clue
• Farm units Crossword Clue
• 'Life — short ...' Crossword Clue
• Med. plan option Crossword Clue
• Mitch Hedberg and Margaret Cho, for two Crossword Clue
• Of an arm bone Crossword Clue
• Playwright Chekhov Crossword Clue
• Racing shell Crossword Clue
• Spud Crossword Clue