Ответьте на вопросы (подробно) :

-Are you sometimes late for school?

-Are yju always friendly and polite with your classmates?

-Do you sometimes have to stay after classes?

- yes, sometimes I can be late for school because I go there by bus and somedays I have to wait for it too long

- I am always friendly and polite with my classmates, because I think that it's very important to keep good relationships.

- Yes, sometimes I have to stay after classes to clean the classroom

Are you это выражение множественного числа you вот и получается слово ВЫ