Robbery: It refers to the act of forcibly robbing public and private property with violence, coercion or other methods for the purpose of illegal possession. According to the above definitions, Which of the following acts constitute robbery:. ['A puts a lot of iron nails on the road. B rides by bicycle and the tire are punctured. When A gets out of the car and checks, A quickly removes the bag in the basket of B.', "Party A and Party B broke into C's house at night, using shotguns to force C to take cash and bank card.", "A sees B holding the mobile phone in his hand, touches B's hand forward, B's mobile phone falls to the ground, A quickly picks up his mobile phone and runs away.", "A hates B. He stuns and flees when it is dark. Later, A returns and finds that B has not yet woke up, and then takes away B's watch."]