По идее тут все предложения должны быть в Present Simple. Но раз в задании просят составить вопрос и отрицание к Past Simple, предлагаю такое решение:1. My working day began at six o’clock.Did your working day begin at 7 o’clock?No, my working day did not begin at 7 o’clock.2. I got up, switched on the TV and brushed my teeth.Did you brush your teeth after you got up?No, I did not brush my teeth after I got up.3. It took me about 20 minutes.Did it take you 25 minutes?No, it did not.4. I had breakfast at seven o’clock.Did you have breakfast at 8 o’clock?No, I did not have breakfast at 8 o’clock.5. I left home at half past seven.Did you leave home at 8 o’clock?No, I did not leave home at 8 o’clock.6. I took the bus to the institute.Did you take the train?No, I did not take the train.7. It usually takes me about fifteen minutes to get there.8. Classes begin at eight.9. We usually have four classes a day.10. I had lunch at about 2 o’clock.Did you have lunch at 1 o’clock?No, I did not have lunch at 1 o’clock.