Оба варианта на выбор.
2.Yes, I shall go to school tomorrow.
No, I shan't go to school tomorrow.
3.Yes, I shall write a letter to my friend in London.
No, I shan't write a letter to my friend in London.
4.Yes, I will take my dog to the street.
No, I shan't take my dog to the street.
5.Yes, I will eat some bread and butter.
No, I shan't eat any bread and butter.