1) Hello teacher
or 2) How are you teacher
Я немного поправлю. все замечательно, только пропущены глагол связка и модальный глагол. И время немного не то.
Did I tell you that my school is holding a big dance next week ? We will celebrate the end of the school year. As I am a member of the organising committee, I spend most of my time after school trying to work out the details of the event. Do you have any good ideas to give me ? What about you ? What you did you do lately ? Do you still work at your dad's shop after school ? You know what ? I have just had a great idea!
They aren't doing the washing up.
He isn't spending a lot of money at the shop.
I'm not tidying the kitchen.
You aren't listening to me.
Marta isn't having a shower. We aren't watching TV.