Hi Alice, what are you doing? You look worried.
Oh. There's something wrong with my electronic calculator.
Do you want me to have a look at it?
It's very kind of you, but I would like to have a try first. Er... You know... I can do without it in class this afternoon.
Oh, well, if you need any help, just let me know. I'm free after school.
I will. Thank you very much.