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