ПОМОГИТЕ ПОЖАЛУЙСТА, СРОЧНО

2) Have you not been to London yet?
    No, I haven't.
3) Have Peter not sent you an email yet? 
    Yes, he has.
4)  The bus has recently arrived.
5) Has Nick not done shopping yet?
    No, He hasn't.
6) He has just finished his homework.
7) Sue and Dolly have already washed the windows.