Номер 2 помогите пожалуйста и срочно

2. I don't know the answer.

3. I haven't got anything for that.

4. What about number three?

5. I think it's London.

Ответ:

2. I don't know the answer.

3. I haven't got anything for that.

4. What about number three ?

5. I think it is London.