____ you _____ (go) to swim?
were/going
___ I _____ (leave) when you started explaining?
was/leaving
____ you ______ (drink) soda?
were/drinking
___ she _______ (write) a new book?
was/writing
____ I ________ (sleep) when you called?
was/sleeping
_____ they _________ (wait) the bus?
were/waiting
____ they _______(talk) diferent lenguages?
were/talking
____ you _______ (dance) at the party?
were/dancing
___ I ________ (study) yesterday?
was/studying
___ he _______ (explain) when I left?
was/explaining
____ she ______ (cook) all the morning?
Was/cooking