If it's time to learn, and then he'll close the door and then lock the crook. The people who came after the times began to study the room. I like this he's punctual
If he is, then it's time to close the door and lock it. People who come after school starts, they will not enter the room. I like this about his punctuality.
If the learning time and he will shut the door and locked it. The time after the start learning will not entering the room. I like the punctuality of his.