Напишите 3 примера положительных, отрицательных и вопросительных. Время Past Continuous

(+) Last weekend we were skiing in the mountains the whole day. - When he was walking his dog in the park, he met his old friend. - I was translating a very difficult test from 5 till 6 o'clock yesterday. (?) What were you doing at this time yesterday? - Was your granny sleeping when you came back from school? - Where were you going when I saw you last Sunday? (-) I was not sleeping when my father came back home. - My mother was not watching TV at 6 o'clock yesterday. - My friend was not doing his homework when I called him last night.