Crossword Puzzle Ear of grain

Clue: Ear of grain

Like ears of grain (SPICATE with 7 letters)
Grain ears (SPIKES with 6 letters)
Offense that may earn you points: Abbr. (DWI with 3 letters)
Earlier offense (PRIOR with 5 letters)
Early offspring (CAIN with 4 letters)
Early Microsoft offering (DOS with 3 letters)
Early TV offering (GMA with 3 letters)
Early Atari offering (PONG with 4 letters)
Spy's reaction to an early retirement offer? (DESKJOBINTERESTSAGENT with 21 letters)
Leaves the office early? (RESIGNS with 7 letters)