:correct each sentence you are cooking lunch,isn't it? i cook dinner at the moment look! someone crossing the street i am sometimes writing letters to him what he is writing ? i am getting up,then i am doing my exercises and cooking breakfast crocodiles and snakes are belonging to the reptiles you go there on sundays or on wednesdays?

Are you cooking lunch,aren't it?
I am cooking dinner at the moment.
Look! Someone is crossing the street
Sometimes I am writing letters to him 
What is he writing ?
I get up,then I am doing my exercises and cooking breakfast
Crocodiles and snakes belong to the reptiles 
Are You going there on Sundays or on Wednesdays?

1) You are cooking lunch,aren't you?
2) I am cooking dinner at the moment
3) Look! Someone is crossing the street
4) I write letters to him sometimes
5) What is he writing?
6) I get up,then I do my exercises and cook breakfast
7) Crocodiles and snakes are belong to the reptiles
8) Do you go there on Sundays or on Wednesdays?