Краткий ответ в отрецательной и положительной форме. Пример: Is the clock on the wall? Yes,it is;no,it isn't Will your friend become a teacher? Do you go to school every day? Are your summer plans interesting? Was it cold yesterday?
Will your friend become a teacher? No, he won't; yes, he will.
Do you go to school every day? No, I don't; yes, I do.
Are your summer plans interesting? No, they aren't; yes, they are.
Was it cold yesterday? No it wasn't; Yes, it was.