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It must be a dog, and it should refer to the lock, and the lock is also called the watchdog, so it's a dog.
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Snake. The snake is shaped like a rope lock used in the past.
The answer should be: keys.
Use the key to open the door when no one is around, not to use it when someone is there (someone to open the door for you), to unlock the door when you enter, and to leave the key there when you enter the door. >>>More
This description seems to be a question posed in the form of a riddle. According to your description, what is the answer to this riddle? According to the riddle's description, this item is used when there is a person, and is not used when there is no one, and is required to be used when entering the door, but is no longer used after entering the door. >>>More
Mystery: Door locks.
Key. Key. Key. Key. Key.
It s it