Margo had already decided that Samarin would not come today, when a soft knock was heard at the door.

- Sign in! she called loudly.

- Good morning, Margarita Nikolaevna!

- And you good!

- Aren't you too busy? Can I distract you for a few minutes?

- Of course, come in, sit down, - and she continued to herself: "I've been waiting for it already. Look how polite and timid it is today! Yesterday I was bolder ...", and said aloud:

- And we seem to have already switched to "you" yesterday?

- Well, in an informal setting, but here there should be subordination.

"Not only polite, but also...