The words that correctly fill in the gap are:
- rancor; and
- Ostracized. (Option A)
What is the corrected sentence?
Upon being turned down three times for a promotion, he was so full of rancor that he ostracized himself from his co-workers, opting to work behind close doors.
Rancor means to be bitter; while to Ostracize means to estrange or cut off.
Hence, the corrected option is option A.
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