Ответ:
1) Emily is working now;
2) I'm not eating an apple;
3)Is Natalia writing a letter?;
4)Anna is having breakfast;
5)We aren't going at work;
6) Are my friends listening to music?;
7)She is sitting on a sofa;
8)Tom and I aren't playing football;
9) Is cat drinking milk?;
10)Alice is reading a book.