What does Montag tell Mildred to do as he enters the house?

This is the interaction Montag has with his wife in Part I when he comes into their home. When Montag enters the home earlier in the text, Mildred is passed out on the floor due to an overdose.

"Who is it?"

"Who would it be?" said Montag, leaning back against the closed door in the dark. His wife said, at last, "Well, put on the light."