Respuesta :
Respuesta:
a) They were building a house last year. (Estaban construyendo un casa el año pasado)
They weren't building a house last year.
Were they building a house last year?
b) Paul and Jennifer were studying science last week. (Paul y Jennifer estaban estudiando ciencia la semana pasada)
Paul and Jennifer weren't studying science last week.
Were Paul and Jennifer studying science last week?
c) Mary was teaching English in that high school. (Mary estaba enseñando ingles en esa escuela secundaria)
Mary wasn't teaching English in that high school.
Was Mary teaching English in that high school?
d) We were telling Mary what happened yesterday (Estabamos diciendole a Mary lo que paso ayer)
We weren't telling Mary what happened yesterday
Were we telling Mary what happened yesterday?