Ryan didn't eat at a restaurant last night
Dad isn't a teacher
Dad isn't using the computer at the moment
Julia didn't watch a DVD last night
Dad and Mum didn't go to the cinema last night
Grandpa isn't eating ice cream at the moment
Dad and Ryan didn't wash the car last weekend
Did mum play dolls last night? No, she didn't
was dad at the hospital last night? no, he wasn't
Is Julia playing the dolls at the moment? Yes, she is
is mum a teacher? yes, she is
is ryan watching a dvd right now? no, he isn't
did granpa and grandma listen to the radio yesterday? yes, they did
are mum and dad washing the car right now? yes, they are