Please choose the correct ending to complete the given sentence: Brushing teeth: A person brush the teeth of a dog while holding the back neck. after

Ending1: , the person breathe in the dog and covers it with the arm, after the person clean the dog teeth with a cloth. Ending2: , a black dog her and a white dog enter and jump on the table and eat food. Ending3: , the person brush the fingers of a dog while holding the front neck. Ending4: , she taps the chest of the dog and put toothpaste on the brush and continue brushing the dog's teeth.

Answer format: ending1/ending2/ending3/ending4