Ответ:

1. At 3 o'clock yesterday afternoon i was going to the school .

2. At 10 o'clock this morning i was doing exercises .

3. Hree hours ago i was walking in the park .

4. Last Saturday i was walking with my friends .

5. At 8 o'clock last night i and my friend were eating at the dinner .

6. Last summer i and my friends having a good time .

7. At half past seven yesterday morning i was mading myself breakfast .

8. This time last week i was riding my homework.