Дайте краткие ответы на вопросы, следуя образцу. Образец: Is Kovalev present at the lesson? – Yes, he is. No, he is not.

1. Is it hot today? Ye, it is. No, it isn\'t. 2. Is it Sunday today? Yes, it is. No, it isn\'t. 3. Is the clock on the wall? Yes, it is. No, it isn\'t. 4. Are you twenty years old? Yes, I am. No, I am not. 5. Will you be at home in the evening? Yes, I will. No, I won\'t. 6. Are the trees green now? Yes, they are. No, they aren\'t. 7. Is your house in the centre of the city? Yes, it is. No, it isn\'t. 8. Will your mother be at home at five o\'clock? Yes, she will. No, she won\'t. 9. Were you free yesterday? Yes, I was. No, I wasn\'t. 10. Is his answer good? Yes, it is. No, it isn\'t. 11. Will you be in town on Sunday? Yes, I will. No, I won\'t. 12. Is mathematics difficult for you? Yes, it is. No, it isn\'t. 13. Are your summer plans interesting? Yes, they are. No, they aren\'t. 14. Is your Institute large? Yes, it is. No, it isn\'t.