Краткие ответы
Is she at home?
Yes, I am
Not, she is not
No, she is not
Yes/ she does
Do you like English?
Yes, I am
No, they don't
Yes, we are
Yes, we do
Are they studing English?
Yes, they are
Yes, they do
No, they are
Not, they are not
Will it be cold in Saint-Petersburg?
Yes, it will be
Not, it won't be
Yes, it is
Yes, it will
Were you at school yesterday?
Yes, I were
Yes, we were
No, they weren't
No, we didn't