(Capitalized words are the ones you should write.)
Good morning, IS Mr. Green there?
No, he IS NOT here. He IS at work at the moment. He usually WORKS until 4 p.m.
What about Mrs. Green? Where IS she?
She IS DOING the shopping. She always DOES the shopping on Thursday afternoons.
Where ARE the children?
They ARE PLAYING football.
They always PLAY football after school.
How DO YOU KNOW all this? Who are you?
I AM the burglar!
Good Luck!