Make questions give short answers present simple or present continuous -................they watch TV in the morning?

Do they watch TV in the morning? - No, they don`t (watch TV in the morning).

Другие примеры предложений в Present Simple: 

Does he play tennis on Sunday? - No, he doesn`t. 

Do you go swimming every day? - No, I don`t.

Do they read every evening? - Yes, they do.

Примеры Present Continuous:

Is she doing her homework right now? - No, she is not.

Are you having lunch right now? - Yes, I am.

Are they mowing the lawn? - No, they aren`t.

Are you reading a book at the moment? - No, I don`t.