2.
I don't understand, can you explain, pleas?
3.
Don't tell anyone your password!
4.
Hello! Is anyone there?
5.
The party was a great success.
6.
sort of: What sort of food do you like?
7.
The party was such a surprise.
8.
I don't think the text is dufficult.Do you?
9.
wrong: Everything is fine nothing can go wrong!
10.
on: She passed on the message to her mum.