hope so or hope not?

[roseriver1012]

---You haven't lost your library book, have you?
---I hope____.
A. so B. not
which one is right? Thanks!
And there is another question : You can call that man _______ 666528. What preposition should be in that blank?
Thanks again!

[bwkcaj_ca]

I hope not (unless the person wanted to lose their his/her book.)

[roseriver1012]

I hope not (unless the person wanted to lose their his/her book.)

What about the second question?

[Rover_KE]

What about the second question?

Can you see the advisability of asking unrelated questions in separate posts, Roseriver?

If that's a phone number, use on.

Rover

[roseriver1012]

Can you see the advisability of asking unrelated questions in separate posts, Roseriver?

If that's a phone number, use on.

Rover

Because I don't want to take up too much space with such short and simple questions. Thank you for your reply.

[Rover_KE]

Because I don't want to take up too much space with such short and simple questions. Thank you for your reply.

You can use as much space as you like, roseriver; there's plenty of room.

Rover