Is the comma after kitchen necessary? would it make a difference if the comma was removed?

just as i was hiding the tube of toothpaste, my brother came into the kitchen, looking for food.

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Read the sentence. a few of the committee members did not attend which of the following accurately labels the bolded words? predicate adjective simple predicate predicate nominative complete predicate

On what evidence did you base your predictions? check the four boxes that apply. there is a rope around his neck. he is in alabama. his hands are tied behind his back. he is standing high above a river. the bridge is for railroads. some crimes are punished by hanging.