1.- Yo estuve en casa de mi amiga ayer A .- I WAS AT MY FRIEND'S HOUSE YESTERDAY N.- I WASN'T AT MY FRIEND'S HOUSE YESTERDAY I.- WERE YOU AT YOUR FRIEND'S HOUSE YESTERDAY? YES, I WAS/ NO, I WASN'T 2.- Mi hermano vio la tele la noche pasada A .- MY BROTHER WATCHED TV LAST NIGHT N.- MY BROTHER DIDN'T WATCH TV LAST NIGHT I.- DID YOUR BROTHER WATCH TV LAST NIGHT? YES, HE DID/ NO, HE DIDN'T 3.- Los amigos de Tom estuvieron en el centro comercial ayer por la mañana A .- TOM'S FRIENDS WERE AT THE SHOPPING CENTRE YESTERDAY MORNING N.- TOM'S FRIENDS WEREN'T AT THE SHOPPING CENTRE YESTERDAY MORNING I.- WERE TOM'S FRIENDS AT THE SHO...