2. Is Helen in class 4B? - No, she is not/ Yes, she is

3. Are Tanya and Helen friends? - No, they are not/ Yes, they are

4. Are they from Belarus?- No, they are not/ yes, they are

5. Is Mr Franklin a teacher? - No, he is not/ Yes, he is

6. Are the pupils in the class nice? - No, they are not/ Yes, they are

.....

В общем, я не знаю можно писать отрицание или же только утверждение, поэтому где "No" - отрицание, а где "Yes"- утверждение. Выбирай сам(а) ^-^