Jointly dangerous acts refer to torts in which two or more persons jointly carry out acts that endanger the safety of others and cause damage, but the actual offender cannot be determined. After the establishment of a common dangerous act, although the real offender can only be one of them or Some people, but if it is impossible to determine who is the actual offender, several people who jointly carry out the dangerous behavior bear joint and several liability. According to the above definition, Which of the following judgments are correct:. ['Wang was killed and killed on a highway late one night. Afterwards, it was found that a total of five vehicles passed the section at that time, but the vehicles involved could not be identified. The behavior of the five drivers constituted a common dangerous behavior.', "the three of them drunk and threw glass bottles downstairs, and one of the bottles smashed a passerby seriously injured. The three's behavior constituted a common dangerous behavior.", 'Zhao parked the motor vehicle downstairs of a resident, and found that the car was hit by a flower pot that fell downstairs early the next morning, and the vehicle was severely damaged. As it was impossible to determine from which house the flower pot fell, all the people in the building Households assume joint and several liability for common dangerous behavior.', 'Huang and other four people quarreled with each other due to trivial matters, and then beat each other. Bystanders Zeng Mou stepped forward to persuade him, and was pulled down in the process of pulling. Zeng Mou was trampled by the four people to cause injuries.']