You (study) (a)   yesterday when someone arrived.

John Maicol (read) (a)   at three o'clock yesterday.

I (work) (a)   at three o'clock this morning.

Mateo and David (eat) (a)   chocolate when they offered coffee.

Juan David (play) (a)   tennis when the ball hit his head..

Ana María and I (watch) (a)   TV when the news announced the crime.

Anggy Carolina (not/work) (a)   in her study when the murder happened.

Lady Patricia (not/talk) (a)   to Andrés Felipe when their parents arrived.

Ruben and Stephanie (not/eat) (a)   in the dining room when the policed called..