Question

Раскройте скобки, употребляя глаголы в Present Continuous или в Present Simple.
I (to sit) in the waiting room at the doctor's now.
The children (to go) to the school every day.
He (to understand) that he (to eat) noisily, but he always (to forget) about it.
Michael (to know) English rather well.
Listen! Mary (to play) the piano in the next room.

Answer 1

1)I am sitting in the waiting room at the doctor's now. 
2)The children go to the school every day. 
3)He understands that he eats noisily, but he always forgets about it.
4)Michael knows English rather well. 
5)Listen! Mary is playing the piano in the next room.