Visible crew/equipment: When Professor Higgins is having Eliza practice saying the letter H by blowing into a tube to make the flame waver, the paper she's holding is actually Rex Harrison's lines. Once the paper starts to burn and the camera angle changes, you can read them and it's practically all of his lines for the whole scene.
Visible crew/equipment: After Eliza has left Henry Higgins, he goes back home, turns on the record of Eliza's voice and sits down to listen. Behind him on the floor to the right, there is a shadow with quite a bit of movement, as if someone was nearby. There is no one else in the room; and it can't be Eliza's, because she is still outside the room, and hasn't approached the doorway yet.
Visible crew/equipment: When Eliza arrives at Higgings' place the shadow of the boom mic is right on top of her when the door is opened.
Answer: It just means put away (roll up) the dance floor so that he won't be distracted with dancing when he has to be at the church on time.
Bishop73