Ответ:
3.Hasn’t she arrived yet?
4.I don’t understand.
5 Are you talking to me?
6.Don’t ask her,she doesn’t know.
7.This is Julia:We have know her for years.
8.Nobody told them the bus was leaving.
9.Why didn’t she ask them to come?
10.Don’t ask me.Ask him.
11.I think he doesn’t like me.
12.They asked him to invite us.