Idek is a Kapo once got angry at Wiesel's father. He lashed out at him and beat him up. Wiesel, instead of being angry at the injustice being done to his father, becomes angry with him for not being able to avoid the mean spirited and cruel Idek.
He sees a car following him and notices that it's the socs. They try to attack him but the greasers came in time to save him
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A sentence that expresses a complete thought and has one subject and one predicate is a simple sentence. Hope this helps!